Addmotor M-380 Review: 750W Tandem Trike for Two

This Addmotor M-380 review covers a machine almost nobody builds: a tandem electric trike, where two adults sit one behind the other and both sets of pedals turn independently. One rider can rest while the other keeps working. We sell it at $4,099 with free shipping in the lower 48 — the same price Addmotor charges, to the dollar.

750 W · 20 mph · 550 lb payload · 147 lb · 130 mi on two packs · fits 5'2"–6'4" · $4,099

Specifications verified: September 20, 2026, against Addmotor's product page, its own Q&A hub, our storefront record and the federal recall database.

The short version

Quick Answer — The Addmotor M-380 is a $4,099 tandem electric trike for two adults: 750 W rear-drive motor, a torque sensor, 20 mph, 550 lb payload, and three wheels with a real differential. Both riders pedal independently, so mismatched legs do not fight each other. Buy it if two people want to ride as one.

It weighs 147 lb and fits riders from 5'2" to 6'4" in both seats. One 48V 20Ah pack is rated 65 miles; the $4,699 twin-pack version is rated 130. The rear seat has a backrest and footrests, so the second rider can stop pedaling entirely — which is the whole reason this machine exists.

Buy the M-380 — $4,099 · Buy the twin-pack — $4,699 — free shipping in the lower 48. Not sure which pack? The range section has the arithmetic.

• The short version
• How we verified this Addmotor M-380 review
• The full specification
• What the M-380 is
• Independent pedaling, and why it is the point
• Tandem trike, tandem bike, or passenger trike?
• Cornering three wheels
• Who sits where, and who fits
• 750 watts, a torque sensor and a differential
• Brakes, and the parking brake
• One pack or two
• 147 pounds, 96 inches, and where it lives
• What it costs to keep
• The Mercer fit test
• Is it UL certified?
• Has it been recalled?
• Where you may ride it
• Green flags / Red flags
• Buy it if / Buy something else if
• Before you buy: the checklist
• Why buy the M-380 from us
• Frequently asked questions
• Where every figure came from
• Limitations of this review
• What to re-check, and when
• The bottom line
• Sources

Two seats, one machine, and a 550 lb payload rating.

How we verified this Addmotor M-380 review

Every figure below is verified against Addmotor's published specification and recomputed where this page does arithmetic, read from Addmotor's own pages on September 20, 2026. Our evidence on this machine is data and math: the maker's numbers, checked across four of its own representations, with every figure that enters a sentence re-derived by a script committed beside this page.

Addmotor's product pages serve no specification block to a plain fetch, so the figures come from the page Addmotor actually renders plus its own model posts and its dated customer Q&A — four separate maker representations, all deposited. Where two of them disagree, the Limitations section says so and names which one this page follows.

By Milad Ghobadibeygvand, BScN (Western University, 2014) — writer and reviewer, Redtail eBikes. We sell this trike, which is why the red flags are written as carefully as the green. Found an error? Email support@redtailebikes.com and we will correct it and date the correction.

The full specification

Every row is Addmotor's row, from its product page, read September 20, 2026.

Addmotor's own dimensioned drawing — tap it to open full size. Every figure on it matches the specification table above, which is why both are printed here.

What the M-380 is

It is a delta trike: one 24-inch wheel at the front that steers, two 20-inch wheels at the back that drive. The front rider steers and brakes. The rear rider sits behind on a sprung saddle with a backrest, with their own cranks and a set of wooden footrests to use when they stop pedaling.

Addmotor describes it as built "for couples, caregivers, seniors, and families". That is a marketing sentence, but the hardware underneath it is specific, and the specifics are what the rest of this page is about.

The machine is 96 inches long. Eight feet is the first thing to plan for, because it decides whether you can own one at all. Skip to the size section if that is your deciding question.

Independent pedaling, and why it is the point

On a conventional tandem bicycle the two sets of cranks are joined, which is not how this machine works. Both riders turn at the same cadence, and if one stops, the other feels it. The M-380 does not work that way: Addmotor sells it on "independent pedaling", and its Q&A and product copy both describe two riders contributing separately.

That single design choice is what makes the machine useful to the people it is aimed at. A rider recovering from surgery, a partner twenty years older, a passenger who tires after four miles: none of them has to match anybody's cadence. They pedal when they want and rest when they want, and the trike keeps moving on the motor and on the other rider.

It is also why a tandem trike and not a tandem bike matters here, on a machine Addmotor rates for two riders. A two-wheeled tandem needs its stoker to stay balanced and engaged. Three wheels remove that requirement completely: the rear rider can sit still, put their feet on the footrests and ride, and nothing about the machine becomes unstable.

Add the M-380 to your cart — or email us your two riders' heights and we will tell you straight whether this is the right shape for you, including when the answer is a different bike.

Addmotor's own illustration of the mechanism: the two cranksets, labeled "Slow" and "Fast", turning at different rates on the same machine.

Tandem trike, tandem bike, or passenger trike?

Three different machines get sold to the same shopper, and they are not interchangeable. Getting it wrong is the costliest mistake available on this page.

The deciding question is not comfort or price. It is whether the second person is a rider or a passenger.

If they want to contribute — to get exercise, to feel part of the ride, to take a turn on a long day — they need pedals, and on the M-380 they get pedals they control alone. If they will never pedal, you are paying for a crankset and a drivetrain that will not be used, and the passenger trike is $200 less and simpler.

And if they can pedal but cannot balance, the tandem bicycle is off the table entirely, whatever its price — which is where a three-wheeled tandem has no substitute. The case this machine exists for is exactly that one.

Addmotor answers the same comparison on its own product page, framing the Greattan L as carrying the rear rider and the M-380 as engineered for shared pedaling. We stock both, and if you are between them, tell us which one your second rider is and we will point you at the right one — including when that is the cheaper machine.

Cornering three wheels

A trike does not lean. A bicycle leans into a turn, and that lean is what keeps a rider balanced against the forces of cornering; three wheels remove the need to balance and, with it, the ability to lean. The rider stays upright and the machine stays flat.

That changes one habit, and it is the habit to build in the first week: slow down before the corner, never in it. Braking while turning asks the chassis to do two things at once. On a trike the rider's weight belongs toward the outside of the turn, the opposite of what a lifetime on two wheels teaches, and the correction is worth practicing in an empty parking lot before a bike path.

This is also where the differential earns its place. Addmotor fits one specifically, in its words, "to enhance maneuverability and ensure safe turning around tight corners" — because a driven rear axle without one forces both rear wheels to turn at the same rate, and in a corner the outer wheel has further to travel than the inner one.

Two more things about this particular machine make cornering a considered exercise. Its wheelbase is 74.5 inches, which is long, so it needs more room to come around than a trike half its length. And its rated payload is 550 lb, so the mass involved can be substantial. Neither is a fault; both are reasons to take the first few rides gently.

Who sits where, and who fits

Addmotor publishes one rider-height range for the machine: 5'2" to 6'4". It does not publish separate ranges for the front and rear positions, and we are not going to invent them.

What it does publish is the seat range: the saddles adjust from 31.55 inches to 45 inches, with a standover height of 17.3 inches and a reach of 14 inches. A 17.3-inch standover is genuinely low — it is the number that decides whether a rider with a stiff hip can get aboard without lifting a leg over a frame, and on this machine they step through instead.

The pairing question is the one Addmotor's own range does not answer. If your two riders sit at opposite ends of 5'2" to 6'4", both are inside the published window, but they will be swapping saddle heights every time they change seats. Tell us both riders' heights before you order and we will put the question to Addmotor in writing.

Both seats occupied, which is the configuration every number on this page is rated for. Addmotor's own photograph.

750 watts, a torque sensor and a differential

The motor is a 750 W rear-drive unit rated to 20 mph, and it is fed by a torque sensor on the front pedals. Addmotor's description is that the sensor "reads how hard you're pedaling and adjusts the power accordingly".

A torque sensor at this price is worth naming. The cheaper alternative is a cadence sensor, which only knows whether the cranks are turning and delivers power in steps. A torque sensor measures effort, which on a 147 lb machine carrying two adults is the difference between assistance that arrives smoothly and assistance that arrives as a shove.

The more unusual part is underneath. Addmotor fits a speed differential on the rear axle, describing it as there "to enhance maneuverability and ensure safe turning around tight corners".

On a two-wheel-drive trike without one, both rear wheels are locked to the same speed. In a turn the outside wheel has further to travel than the inside one, so something has to give, and what gives is grip. A differential lets the two wheels turn at different rates instead, which is why the spec sheet lists it as its own feature.

Addmotor's own illustration of the rear axle. The arrows show the two rear wheels turning at different rates through the differential — the thing that lets a trike corner without scrubbing.

Brakes, and the parking brake

Tektro mechanical disc brakes on each of the three wheels, plus a parking brake.

Take the parking brake first, because it is the one people underestimate. This machine weighs 147 lb before anybody sits on it, and unlike a bicycle it stands up by itself.

On any slope, a trike that stands up by itself is a trike that can roll away by itself. A parking brake stops that happening while one rider is getting settled, which on a machine built around a rider who needs a moment is not a small feature.

The discs are mechanical, not hydraulic. Mechanical discs are cable-operated: they ask a little more from the hand at the lever, and they need the cable adjusted as the pads wear. They are also serviceable with basic tools by any bike shop in the country, and adjustable at home with a barrel adjuster. Hydraulic systems self-adjust and take less hand force, and they need bleeding by someone with the kit.

Which of those you want is a genuine choice, and it depends on your hands and your local shop. Neither system is better in the abstract. If grip strength is the constraint for either of your riders, say so before you order and we will talk it through.

One of three. Every wheel on this trike has its own disc.

The oil spring fork, which Addmotor publishes at 80 mm of travel.

One pack or two

This is the $600 decision, so the arithmetic is below, in place of the slogan.

One 48V 20Ah pack is 960 watt-hours, and Addmotor rates it at 65 miles. The twin-pack version doubles both: 1,920 watt-hours and a rated 130 miles. The price difference between them on our shelf is $600 — $4,099 against $4,699.

Divide it out and the second pack costs $9.23 for each additional rated mile.

Whether that is worth it turns on one question: do you have a ride that needs more than 65 miles between charges? If your longest ride is a beach path or a neighborhood loop, the answer is no, and the single pack is the better buy. For anyone touring, or anyone who would rather charge once a week than twice, the second pack is the point of the machine.

Addmotor states one more thing in its own customer Q&A, and almost nobody else repeats it: the two batteries are independent and cannot be charged at the same time. Each has its own port and each is charged separately. If you buy the twin-pack expecting to plug in once overnight and wake to two full packs, that is not how it works.

Both ranges are Addmotor's rated figures. Real range on any e-bike falls with rider weight, hills, wind, tire pressure and assist level — and this machine is rated to carry 550 lb, which is a lot of the first variable.

Buy the twin-pack — $4,699 · Buy the single — $4,099 — both ship free in the lower 48.

Addmotor's own rear-view drawing, annotated 38.5 inches. That width is the number to measure your side gate against.

147 pounds, 96 inches, and where it lives

The numbers that decide ownership: 96 inches long, 38.5 inches wide, 147 pounds.

Eight feet long and over three feet wide is a machine that needs a plan. It will not go up a flight of stairs, it will not hang on a wall hook, and a standard two-bike hitch rack is not rated for 147 lb. A single-car garage takes it lengthwise with room to walk past. Many garden sheds do not.

The width counts in a second place that is easy to miss: 38.5 inches. Standard residential doorways are 32 to 36 inches. Many bike-path bollards and gates are set at 36. Measure your side gate before you order, because a trike that fits your garage but not the route out of it is still a problem.

The 147 lb figure is the machine empty. It is why the parking brake exists, and it is why this is not a trike you lift — it is one you roll.

None of this is a defect; it is the shape of a machine that seats two adults. But it is the thing to settle first, and it is easier to settle now than on delivery day.

What it costs to keep

The price is the visible number. The ones that follow it are below, each read from a published figure.

Charging. One 48V 20Ah pack holds 960 watt-hours — and the two charge separately. At the US residential average, a full charge of one pack costs a few cents of electricity — the twin-pack version is two of those, because the packs charge separately. Against 65 rated miles per pack, the energy cost of riding this machine is not a number that will change your decision.

Consumables. Mechanical disc brakes need pads and, unlike hydraulics, periodic cable adjustment. There are three sets of pads on this trike where a bicycle carries two, and it stops 147 lb plus up to 550 lb of payload, so plan on servicing them more often than you would a bike's. The Shimano 7-speed drivetrain and KMC chain are standard parts any shop stocks.

Tires. 24" × 4.0" at the front and 20" × 4.0" at the rear means two different sizes to keep, and fat tires in those diameters are a narrower market than a 700c commuter tire. Buy the spare tubes when you buy the trike.

The battery. Addmotor warrants the 20Ah pack for two years. A replacement pack is the largest single cost any e-bike owner eventually meets, and it is the reason the UL 2271 certification on this one is worth the line it gets above.

What we would budget. Nothing here is exotic, and none of it is unique to Addmotor — it is the running cost of any 147 lb three-wheeler that carries two adults. The honest summary is that the purchase price is the decision and the running costs are ordinary.

The parking brake. On a 147 lb machine that stands up by itself, this is the part that keeps it where you left it.

The Mercer fit test

The Mercers are our editorial cast — a fixed measuring stick we hold every bike against, so the same seven bodies meet every machine we review. Meet the Mercers. Every verdict below reads a published number, never a ride we did not take.

Addmotor publishes one rider range for this trike, 5'2" to 6'4", and a saddle range of 31.55" to 45".

The sharpest contrast on this page is Frank and Maya, and it is not about their bodies — both fit the published range comfortably. It is that Frank and Ruth are exactly who this machine is for, two adults who want to ride together at different efforts, and Maya is a single commuter who would be parking an eight-foot trike to buy coffee. Fit is not only height. On this machine it is mostly life.

One rider, rear seat empty. Addmotor answers this configuration directly in its own customer Q&A.

Is it UL certified?

Addmotor states UL 2271 for the battery, printed on the product page's certification row and repeated in its own model copy.

UL 2271 is the standard for the battery pack. It is not the same as UL 2849, which covers the complete electrical system — the pack, the charger, the controller and the motor together — and it is UL 2849 that New York City's Local Law 39 is written around. We did not find UL 2849 named for this model anywhere in Addmotor's own pages, and we are not going to report a certification the maker does not claim.

That distinction has a concrete consequence that Addmotor publishes itself, on the M-380's own product page: "Delivery to New York City, including billing addresses, is currently prohibited due to Local Law 39." If you live in the five boroughs, this machine cannot be shipped to you — by Addmotor or by us — and no amount of wanting it changes that. Our New York page has the rest of the state's position.

Addmotor also publishes a Proposition 65 warning on the page, as it does across its range, which is a California disclosure requirement and not a finding about this trike.

Has it been recalled?

No federal recall names Addmotor, screened September 20, 2026.

This is a screened result. A clean bill of health would be a different claim, and the difference matters. We queried the CPSC's SaferProducts database across four query fields — each one validated with a positive and a negative control first, because that database silently ignores a manufacturer filter and returns everything — and we read the federal electric-bicycle recall corpus, 19 records, by hand. Addmotor is named as a word in none of them.

The CPSC's separate public-warnings index is client-rendered and returns nothing to a scripted read, so we screened it by search with a control that works: the same query surfaces the live Ridstar, Rad Power and Liberty Trike warnings. It surfaces no Addmotor warning.

For the category and not the brand, two things are live and worth knowing as a trike buyer: CPSC has a 2026 warning on Liberty Trike 16-inch and 20-inch electric tricycles over a fall hazard, and Pedego recalled fat-tire trikes over fall and laceration hazards. Neither involves this machine. Both are worth a search of your own on any trike you are considering, ours included — SaferProducts.gov is free and takes a minute.

Where you may ride it

Two numbers on this trike decide its legal status, and they are worth two minutes before you buy.

The first is the motor: exactly 750 W. The federal low-speed electric bicycle definition admits a motor of less than 750 watts, and twenty US jurisdictions copy that wording — "less than" or "fewer than" — into their own vehicle codes. A motor rated at exactly 750 W sits outside those definitions on the wording.

The second is the wheel count, and our state screen reads it separately. Twenty-six of the fifty-one jurisdictions in our state screen define an electric bicycle as having two or three wheels, and a trike is plainly inside those. Four states define an electric bicycle as a two-wheeled vehicle: Alabama, Montana, New Jersey and Rhode Island. In those, a three-wheeler is outside the definition regardless of the motor.

Put the two limbs together against all 51 US jurisdictions and 23 of 51 do not admit this machine as an electric bicycle — though "not an electric bicycle" rarely means "not ridable". It generally means a different vehicle class, with its own rules about where you ride and who may ride it.

This is a fact about statutes, not about the trike. Every state writes its own, they change, and the only answer that helps you is your own state's. Start with our state-by-state e-bike law guide, which carries the current wording and citation for all fifty states — including Alabama, New Jersey and Rhode Island among the two-wheel states, and New York and Texas among the exclusive-wattage ones.

Ask us before you order and we will read your state's section with you.

Green flags / Red flags

Green flags

• A torque sensor and a real differential. Both named at $4,099 on Addmotor's own spec sheet
• Independent pedals front and rear. The feature that makes mismatched riders work, and the reason this machine exists
• 550 lb payload on a 17.3" standover. A combination that covers two adults plus cargo and still lets a stiff hip aboard
• Discs on all three wheels, plus a parking brake. On a machine that stands up by itself, the parking brake is the one that keeps it there
• UL 2271 on the battery, named by the maker. With a 2-year warranty on frame, battery and motor
• Priced to the dollar against Addmotor's own page. And it ships free in the lower 48

Red flags

• 96 inches long, 38.5 inches wide, 147 lb. If your storage or your side gate will not take that, nothing else on this page counts — the size section has every number to measure against
• It cannot be delivered to New York City, by Addmotor's own statement, under Local Law 39. Read our New York page before you plan around it
• The two packs charge separately, so a twin-pack owner plugs in twice. If one overnight charge matters more to you than 130 miles, buy the single-pack version and keep the $600
• Mechanical rather than hydraulic discs. Serviceable anywhere; if grip strength is a constraint for either rider, tell us before you order
• It is a two-person machine at a two-person price. A solo rider is buying eight feet and 147 lb they will never use. A folding trike is the better answer

Buy it if / Buy something else if

Buy it if

• Two adults want to ride together and cannot ride at the same effort — different fitness, different ages, a recovery, a condition
• You have somewhere to put a 96-inch trike and a route out of it wider than 38.5 inches
• You want a caregiver-shaped machine where the second rider can genuinely stop and still be part of the ride
• You would rather have a torque sensor and a differential than a longer spec sheet of things you will not use

Buy something else if

• You ride alone. This is the wrong tool and an expensive one — start with our folding trike review or a commuter e-bike
• You want three wheels but only one seat, and a bigger battery matters more than a second saddle — our Eunorau NEW-TRIKE 2.0 review covers a single-rider trike at $2,499
• You live in New York City. Addmotor will not ship it there, and neither will we
• You need the second person carried rather than seated as a rider — that is a passenger trike, a different shape at $3,899
• Storage is genuinely tight. Three wheels that fold exist, and the Citytri E-310 is the one we have reviewed

Before you buy: the checklist

Seven things to settle before you order an M-380, in the order they can stop the purchase: the space it needs, the two riders' heights, which battery, how it charges, your state's rule, the New York City restriction, and the assembly left in the box.

1. Measure the space, then measure the way out of it. 96" long, 38.5" wide.
2. Confirm both riders sit inside 5'2" to 6'4".
3. Decide one pack or two on your actual longest ride rather than the rated number: 65 vs 130 miles, $600 apart.
4. If it is the twin pack, plan two charging sessions.
5. Check your state on our law guide — the motor is exactly 750 W and it has three wheels.
6. If you are in NYC, stop here. It cannot be shipped to you.
7. Budget the delivery: it arrives 85% pre-assembled by Addmotor's own answer, and the rest is a bike shop's twenty minutes or yours.

Why buy the M-380 from us

Change of mind is accepted on unopened, factory-sealed items within 72 hours of delivery, with a 15% restocking fee plus return shipping; cancellations carry a 3% transaction fee, because card-processing fees are not recoverable. Full terms: Shipping Policy · Refund Policy.

Buy the M-380 — $4,099 — free shipping, 2-year warranty, and we handle the claim.

Frequently asked questions

What is a tandem electric trike?

A tandem electric trike seats two riders one behind the other on three wheels, with pedals at both positions and a motor — the configuration Addmotor publishes for this machine. On the M-380 the two sets of pedals work independently, so each rider chooses their own effort and either can stop without affecting the other.

Can two people really ride the Addmotor M-380 together?

Yes — that is what it is built for. Addmotor rates it at a 550 lb payload, and both seats have their own cranks. The rear position adds a backrest and footrests so that rider can stop pedaling and still ride comfortably.

How fast does the Addmotor M-380 go?

20 mph, per Addmotor's specification. It has seven levels of pedal assist and a half-twist throttle.

What is the real range of the M-380?

Addmotor rates 65 miles on one 48V 20Ah pack and 130 miles on two. Those are rated figures. Actual range falls with rider weight, hills, wind and assist level, and this machine can be carrying two adults.

Can you charge both M-380 batteries at once?

No. Addmotor states in its own customer Q&A that the two batteries are independent and cannot be charged simultaneously — each is charged separately through its own port.

How much does the Addmotor M-380 weigh?

147 lb empty. It is 96 inches long and 38.5 inches wide, which is why Addmotor fits a parking brake and why storage is the first thing to check.

Does the Addmotor M-380 have a differential?

Yes. Addmotor fits a speed differential on the rear axle, which lets the two rear wheels turn at different speeds through a corner instead of one wheel scrubbing.

Is the Addmotor M-380 battery UL certified?

Addmotor states UL 2271 for the battery. We found no UL 2849 claim for the complete system on any of Addmotor's pages, and UL 2849 is the standard New York City's Local Law 39 is written around.

Can the M-380 be shipped to New York City?

No. Addmotor's own product page states that delivery to New York City, including billing addresses, is currently prohibited under Local Law 39.

Is the Addmotor M-380 street legal?

It depends on your state. The motor is rated at exactly 750 W and the machine has three wheels, and both of those interact with how your state writes its electric-bicycle definition. Check our state-by-state guide, or ask us and we will read your state's section with you.

Does the Addmotor M-380 come assembled?

Addmotor answers this in its own Q&A: it arrives 85% pre-assembled and the remaining assembly is straightforward. The remaining assembly is a bike shop's short job, or yours.

Can one person ride the M-380 alone?

Yes. Addmotor sells it as a solo-capable machine and its own customer Q&A answers this directly. The front position steers, brakes and carries the throttle, so a single rider operates it exactly as they would any trike — the rear cranks simply go unused. What you cannot do is make it shorter: you are still steering a 96-inch, 147 lb machine.

How do you transport the M-380 in a car?

You do not. At 96 inches long, 38.5 inches wide and 147 lb it does not fold and it is not a two-person lift onto a standard hitch rack. Plan on riding it from where it is stored. If transporting your trike is a requirement, the folding Citytri E-310 is the machine in our range built for it.

How do you lock up an electric trike?

The same way as a bike, with one extra consideration: a trike's rear wheels sit either side of an axle, so a U-lock that works on a bicycle's rear triangle may not reach a useful part of the frame. Lock the frame to the rack, never a wheel, and treat the battery as separately removable. This is a category question and not an M-380 question, and it applies to every trike we sell.

How much is the Addmotor M-380?

$4,099 for the single-battery version and $4,699 for the dual-battery version, matching Addmotor's own prices. Both ship free in the contiguous 48.

Where every figure came from

Every source this page rests on, graded. T1 is a first-party or publisher-of-record document; T2 is the manufacturer; nothing below T4 is cited, and no T5 source appears at all.

Limitations of this review

Nine things this review cannot tell you, and why. They are listed here rather than buried, because the value of everything above depends on knowing exactly where it stops.

1. We sell this trike. Read the red flags as carefully as the green ones. Our price parity against Addmotor is checkable at the link above, and we would rather you checked it.
2. The basis is the specification, verified — not a ride. Every figure here is Addmotor's published number, confirmed across four of its own representations and recomputed where this page does arithmetic. Where a page of ours rests on a ride, it says so and publishes the footage; this one rests on the documents.
3. Addmotor publishes two payload figures. Its product page states 550 lb, twice, in two separately maintained blocks. One of its comparison blog posts states 500 lb for this model — and states the same 500 lb for a different trike three paragraphs earlier, which is why this page follows the product page. Launch press coverage carried a "350 lb passengers + 150 lb cargo" split that appears on no Addmotor page we read, so no split is printed here.
4. No UL 2849 claim was found for the complete system on any Addmotor page we read. The sentence describes what we could read. It is not a finding about the machine.
5. No separate front and rear rider-height ranges are published. The single 5'2"–6'4" range covers the machine, and no front/rear split appears on any Addmotor page we read.
6. The CPSC public-warnings index could not be read directly — it is client-rendered and returns nothing to a scripted request. It was screened by a search route whose positive control works. The recall database was read directly.
7. The state-definition screen reads the section each state publishes. For 17 jurisdictions the section we read states no wheel count at all, and those are recorded as unread on that limb rather than as permission to ride a three-wheeler. Eight of the 51 end the screen unresolved on that account; the other nine are already outside on the wattage word, so the wheel limb changes nothing for them.
8. Three claims here rest on a single publisher, and we say which. The 550 lb payload is Addmotor's alone — no independent party has published a load rating for this machine. The 51-jurisdiction screen is our own first-party dataset, built from each state's own code, and nobody else publishes it. Montana's two-wheel definition was read at one source, the state's own code, because we publish no Montana law page yet to check it against.
9. What would age this page. A price change at Addmotor or here; a new model year; any CPSC action naming Addmotor; a UL 2849 certification being published for this model; New York City's Local Law 39 position changing; and any amendment to the wattage or wheel-count wording in the states named above. We re-read the maker's page and re-run the recall screen at every update, and the verification date at the top is the date to trust.

What to re-check, and when

This page is dated because the things it rests on move. Three are worth re-checking if you are not buying today, and we re-check all three at every update.

The New York City position. Addmotor's own page blocks delivery to the five boroughs under Local Law 39, which is written around UL 2849. A published UL 2849 certificate for this model would change that, and nothing else would.

Your state's wording. The motor is rated exactly 750 W, so this machine sits on the wrong side of a one-word difference in twenty jurisdictions. Wattage limbs get amended, and our law guide carries the current wording with its citation for all fifty states.

The price. Ours matches Addmotor's to the dollar on both variants today. We re-read the maker's page at every update, and if they move first, we move.

The bottom line

Buy the Addmotor M-380 if two adults want to ride together and cannot ride at the same effort, and if you have room for a 96-inch trike.

That is a narrow description, and this is a machine built precisely to it: independent pedals so nobody is dragged along, a backrest and footrests for the rider who stops, a 550 lb payload, and a differential so it corners properly. At $4,099 — the maker's own price, or 2 payments of $2,049.50 — the torque sensor and the differential are the parts you would miss on anything cheaper.

Skip it if you ride alone, if you live in New York City, or if your side gate is narrower than 38.5 inches. And if you are not sure which of those you are, email us with both riders' heights and your storage measurement. We will tell you straight — including when the honest answer is a different bike.

Buy the M-380 — $4,099 · Buy the twin-pack — $4,699

Sources

1. Addmotor, "M-380 Tandem eTrike" product page — specification table, dimensioned drawing, shipping and restriction rows. https://www.addmotor.com/products/m-380-tandem-etrike (read September 20, 2026)
2. Addmotor, customer question hub for the M-380 — assembly and battery-charging answers, dated October 2025. https://www.addmotor.com/question_p439/ (read September 20, 2026)
3. Addmotor, "Why Choose the Addmotor M-380 Tandem Trike for Adults" — torque sensor, differential and lighting descriptions. https://www.addmotor.com/blog/why-choose-the-addmotor-m-380-tandem-trike-for-adults (read September 20, 2026)
4. Addmotor, "A Comprehensive Guide to Electric Tandem Trike." https://www.addmotor.com/blog/a-comprehensive-guide-to-electric-tandem-trike (read September 20, 2026)
5. Addmotor, "Tandem Electric Trike vs Electric Tricycle Rickshaw." https://www.addmotor.com/blog/tandem-electric-trike-vs-electric-tricycle-rickshaw (read September 20, 2026)
6. Redtail eBikes, Addmotor M-380 Tandem eTrike listing — price, variants, stock, Shop Pay terms. https://redtailebikes.com/products/addmotor-m-380-tandem-etrike (read September 20, 2026)
7. US Consumer Product Safety Commission, SaferProducts recall database. https://www.saferproducts.gov/ (screened September 20, 2026)
8. US Consumer Product Safety Commission, "CPSC Warns Consumers to Immediately Stop Using Liberty Trike 16 Inch and 20 Inch Electric Tricycles Due to Risk of Serious Injury from Fall Hazard" (2026). https://www.cpsc.gov/Warnings/2026/CPSC-Warns-Consumers-to-Immediately-Stop-Using-Liberty-Trike-16-Inch-and-20-Inch-Electric-Tricycles-Due-to-Risk-of-Serious-Injury-from-Fall-Hazard
9. US Consumer Product Safety Commission, "Pedego Electric Bikes Recalls Fat Tire Trikes Due to Fall and Laceration Hazards" (2026). https://cpsc.gov/Recalls/2026/Pedego-Electric-Bikes-Recalls-Fat-Tire-Trikes-Due-to-Fall-and-Laceration-Hazards
10. 15 U.S.C. § 2085(b), low-speed electric bicycle definition. https://www.law.cornell.edu/uscode/text/15/2085
11. Ala. Code § 32-1-1.1 — electric bicycle and bicycle definitions. https://alison.legislature.state.al.us/code-of-alabama?section=32-1-1.1 (read August 19, 2026)
12. Mont. Code Ann. § 61-8-102 — electrically assisted bicycle definition. https://archive.legmt.gov/bills/mca/title_0610/chapter_0080/part_0010/section_0020/0610-0080-0010-0020.html (read August 19, 2026)
13. R.I. Gen. Laws § 31-1-3 — electric motorized bicycle definition. http://webserver.rilegislature.gov/Statutes/TITLE31/31-1/31-1-3.htm (read August 19, 2026)
14. Tex. Transp. Code § 664.001 — electric bicycle definition. https://statutes.capitol.texas.gov/Docs/TN/htm/TN.664.htm (read August 19, 2026)
15. N.Y. Veh. & Traf. Law § 102-c — electric assisted bicycle definition. https://www.nysenate.gov/legislation/laws/VAT/102-C (read August 19, 2026)
16. Redtail eBikes, Shipping Policy. https://redtailebikes.com/policies/shipping-policy (read September 20, 2026)
17. Redtail eBikes, Refund & Return Policy. https://redtailebikes.com/policies/refund-policy (read September 20, 2026)
18. Redtail eBikes, Electric Bike Laws by State — our 51-jurisdiction screen and its per-state citations. https://redtailebikes.com/blogs/journal/electric-bike-laws (dataset read August 19, 2026)
19. Redtail eBikes, New Jersey E-Bike Laws. https://redtailebikes.com/blogs/journal/new-jersey-ebike-laws (read September 20, 2026)