Best Electric Bikes Under $400 on Amazon (2026)

Amazon US only, a hard $400 ceiling at our checked prices, every pick in stock on its live Amazon US listing when this guide was written in September 2026, and every pick has a full review on this site. We have not ridden these bikes. Each entry restates its own review, which works from the Amazon listing, the manufacturer's spec sheet where one exists, and the arithmetic on the battery. The ranking weights what a listing is willing to state: a rated motor figure, a top speed, a UL standard with the certifying lab named, and a weight. A bike that advertises a speed outside every US e-bike class is named with the reason rather than ranked. Bikes priced within about 3% of $400 appear as mentions, because a normal daily price move would push them in and out of the list. Amazon prices move constantly, so the buy buttons always fetch the live number.

Under $300, Amazon's best-selling e-bikes lean small. The top four bikes in Amazon's Electric Folding Bikes chart in September 2026 are all 14-inch minis priced under $300. The next $100 mostly changes the shape of the bike: 26-inch frames with 7-speed gearing, 20 x 3 inch fat tires, step-through frames with racks and fenders, and batteries of 499 to 624 Wh. On two Funhang commuters it also buys a complete set of disclosures, a rated motor, a stated 20 mph cap and both UL safety standards with the lab named. Prices move, though: the Jasion EB5 below is a full-size hardtail whose price has moved on both sides of $300, so trust the figure on each card.

That is why this list ranks on what each listing states rather than on headline wattage. US e-bike rules are built on two numbers. The federal consumer-product definition of a low-speed electric bicycle, 15 U.S.C. §2085, covers a bike with working pedals, a motor under 750 W, and a top speed under 20 mph on motor power alone. State three-class laws then sort bikes by speed and throttle: Class 1 is pedal assist to 20 mph, Class 2 adds a throttle and still stops at 20 mph, and Class 3 is pedal assist to 28 mph, usually with no throttle. A peak wattage figure is not a rated figure, and a listing with no rated wattage or no top speed cannot be placed in a class from the page. Each entry below says which case it is.

On safety paperwork, UL 2271 covers the battery pack and UL 2849 covers the complete electrical system, battery, charger, controller and motor together. New York City's Local Law 39 of 2023 bars selling e-bikes there without UL 2849 or an equivalent, and landlords well beyond New York ask for the certificate before allowing indoor charging. A claim that names the lab behind it, as both Funhang picks do with SGS, can be checked. A claim with no lab named is only a claim.

1. Funhang City Cruiser 26: best overall

The Funhang City Cruiser 26 has the cleanest legal and safety paperwork of any bike on this page: a 500 W rated motor (1000 W peak), a stated 20 mph cap with a throttle, which is a textbook Class 2, and UL 2271 for the battery plus UL 2849 for the complete bike, both recognised by SGS, for $369.99 (as of Oct 31, 8:10 PM EDT, subject to change). Nothing in that sentence needs a caveat, and there is no display setting to change before the first ride.

The range claim is honest too. Funhang quotes 25 to 30 miles in pure electric mode from a 48 V 374 Wh pack, which works out to about 13 Wh per mile: the optimistic end of what is achievable, not an impossible figure like the 55 to 80 mile claims elsewhere on this page. Around that sits a low step-through frame, 7-speed gearing, an adjustable stem and seat that fit different riders in one household, five riding modes, and an IPX5 removable battery for charging indoors. The trades are a modest pack for a day out, no published weight or payload, mechanical disc brakes, and 26-inch city tires that ride harder over broken pavement than a fat tire. Read the full Funhang City Cruiser 26 review.

2. Funhang EB-C2: best step-through with the battery built in

The Funhang EB-C2 pairs the City Cruiser's 500 W rated motor, 374.4 Wh battery and SGS-recognised UL 2271 and UL 2849 documentation with a pack hidden inside the down tube, for $369.99 (as of Oct 31, 8:10 PM EDT, subject to change). It is #4 in Amazon's Electric City Bikes (September 2026), and it publishes three numbers most budget listings leave out: a 62.83 lb weight, a 300 lb maximum load and 62 N·m of torque. A rear rack, full fenders, a front suspension fork, a horn, a stated 5 ft 3 in to 6 ft 1 in rider range and a 1-year warranty complete the sheet.

It ranks below the City Cruiser for one conflict. The Amazon listing states 20 mph, which makes it Class 2, while both EB-C2 pages on Funhang's own store state 21.7 mph (35 km/h), and a throttle bike above 20 mph fits no class. Hold full throttle on flat ground on your first ride and read the display; if it passes 20, lower the limit in the settings menu before using bike lanes or paths. Plan on about 20 miles per charge, because the 40 to 50 mile pedal-assist claim needs 7.5 to 9.4 Wh per mile. Read the full Funhang EB-C2 review.

3. Jasion EB5: best full-size hardtail with a stated rated motor

The Jasion EB5 states a 500 W rated motor and a 20 mph cap for $199.99 (as of Oct 31, 8:10 PM EDT, subject to change), the two numbers US e-bike law is written around, on a plain 26-inch hardtail that was #3 in Amazon's Electric Mountain Bikes in October 2026, with over 2,200 reviews. That makes it a Class 2. It adds 7-speed gearing, a front suspension fork, a published 49.6 lb weight and a 330 lb payload, which is more than most bikes at this price will tell you.

The trades are battery and paperwork. The 360 Wh pack is small, so our review plans on about 16 miles per charge. Its Amazon listings state no UL standard at all, which puts it a step below the two Funhangs on paperwork. Assist is cadence-based, and Jasion gives a 1-year warranty on motor and battery and 6 months on the frame. It took this slot in October 2026 from the HopCycle EB3L, which was discontinued on Amazon. Read the full Jasion EB5 review.

4. Gotrax Nano: best lightweight folder

The Gotrax Nano weighs 31 lb, the lightest bike in this guide by a wide margin, for $379.99 (as of Oct 31, 8:10 PM EDT, subject to change), which makes it the pick for anyone who has to carry an e-bike up stairs or onto a train. Its listing gives the folded size as 46.4 x 19.3 x 26.8 inches from a folding handlebar, so it saves weight more than floor space. It is #1 in Amazon's Electric Compact Bikes (September 2026). The listing states a 350 W rated motor (450 W peak) and a 15.5 mph assist cap, well inside the US limits of 750 W rated and 20 mph. Gotrax is a US company with a Dallas-based service team, phone support and distribution through Target, Walmart and Best Buy, and the warranty is 1 year on motor and battery and 90 days on components.

The cost of that weight is everything else. The listing states a 36 V 7.8 Ah (281 Wh) battery, which Gotrax rates for 15.5 miles on the motor alone and 25 with pedal assist. There is no suspension fork, the 14-inch wheels suit riders of roughly 5 ft 0 in to 5 ft 7 in, the stated payload is 220 lb, a 350 W rated motor is not a hill bike, and the listing states UL 2849 without naming a lab. Buy it for short flat hops where carrying the bike is the hard part. Read the full Gotrax Nano review.

5. Misodo Mountain 26: best for bigger and taller riders

The Misodo Mountain 26 states who it is built for, a 350 lb maximum capacity and a fit range of 5 ft 1 in to 6 ft 6 in, on a 26-inch hardtail for $249.98 (as of Oct 31, 8:10 PM EDT, subject to change), and it is #2 in Amazon's Electric Mountain Bikes (September 2026). Most listings at this price publish neither figure, which leaves larger and taller riders guessing. It also carries a 499 Wh battery (48 V x 10.4 Ah), a 7-speed drivetrain, front suspension, a reinforced high-carbon steel frame, a headlight and five riding modes including walk assist, which helps on a heavy bike pushed up a ramp.

What it will not state is its legal class. Misodo gives no top speed and no rated wattage, only a 1500 W peak figure with a throttle, so assume it exceeds the 20 mph Class 2 cap until you have checked. Most controllers of this type expose a speed limit in the display, and setting 20 mph is the step that brings it into Class 2 behaviour. No UL certification is named and no weight is published. The 65 mile range claim needs 7.7 Wh per mile from 499 Wh, which no e-bike achieves; plan on 20 to 25 miles. Read the full Misodo Mountain 26 review.

6. ESKUTE Folding Cargo 20: best fat-tire folder

The ESKUTE Folding Cargo 20 puts a 624 Wh removable battery (48 V x 13 Ah), 20 x 3 inch fat tires, a front basket and a rear rack on a tool-free folding step-through frame for $349.99 (as of Oct 31, 8:10 PM EDT, subject to change), the biggest battery among the picks on this page. It adds a 7-speed cluster and NFC-card unlock instead of a key, and the step-through stays easy to mount with the basket loaded. For one bike that folds into a car and still carries the groceries, no other pick does both.

The listing leaves three important blanks. It gives 1200 W peak and no rated figure, it says "20+ MPH" rather than committing to a cap, and it claims no UL 2849 or UL 2271 certification anywhere, which is the wrong omission on a bike designed to have its battery carried indoors. Two of its feature bullets are also identical, word for word. The 55 mile claim needs about 11.3 Wh per mile; plan on about 25 miles, since a 20 x 3 tire in mixed riding draws roughly 20 to 28 Wh per mile. Buy it if you charge in a house or garage where nobody asks for a certificate. Read the full ESKUTE Folding Cargo 20 review.

You can buy one, and we do not recommend it. The YUCHETX Moped 20 advertises 30 to 35 mph for $299 (as of Oct 31, 8:11 PM EDT, subject to change), on an 88 lb moped-style frame with 20 x 4 inch tires, cable-actuated disc brakes, no rated wattage, no UL certification and five different battery sizes on one listing. The URLIFE E20 is quieter about it: its Amazon bullets give no top speed, while URLIFE's own store says the US version reaches 28 mph with a working throttle. The LELEKUAI T5, #1 in Amazon's Electric Folding Bikes (September 2026), says 24 mph in its title with a throttle.

None of the three fits a US e-bike class as described. Class 1 and Class 2 stop at 20 mph, and Class 3 allows 28 mph with pedal assist but usually no throttle, so a throttle bike above 20 mph falls outside all three, and 30 mph is above even the Class 3 ceiling. It also fails the 20 mph motor-only line in the federal definition at 15 U.S.C. §2085. In most states a machine like that is a moped or motor vehicle on public roads, which can bring registration, insurance and licensing rules. The brakes matter as much as the law: cable discs on an 88 lb bike at 35 mph have a lot of work to do. If a listing lets you set a 20 mph limit in the display, that is the change to make before riding in bike lanes or on paths. If you want real speed legally, a compliant Class 3 costs more than this budget; see where Class 3 e-bikes are legal first.

The URLIFE E20 for $359.99 (as of Oct 31, 8:11 PM EDT, subject to change) is a lot of hardware: a 624 Wh battery, a 500 W rated motor per URLIFE's spec table, 20 x 3 inch tires, a low step-through frame with rack and fenders, and UL 2849 in the Amazon title (no lab named, and absent from URLIFE's own page). It is not ranked because of the 28 mph throttle described above. Capping it at 20 mph would make it Class 2, though URLIFE does not document how to set that.

The Vivi Gopina for $356.39 (as of Oct 31, 8:11 PM EDT, subject to change) is a certified folder with SGS-tested UL 2849, a step-thru frame, 16 x 3.0 inch tires and a lockable fork. Two things keep it off the list: it weighs 69 lb with the battery, which defeats much of the point of a mini folder, and Vivi's spec table gives 21.7 mph pedal assist alongside a throttle capped at 15.5 mph. That assist speed is above the Class 2 limit, and Class 3 usually excludes a throttle, so its class depends on how your state words the rule.

The DTTZH A12 for $278.99 (as of Oct 31, 8:10 PM EDT, subject to change) carries a 720 Wh battery, more than any pick on this page, with a stated 750 W rated motor and a UL 2849 claim that names no lab. It is a 14-inch single-speed with no published top speed or weight, and it is already the battery-per-dollar pick in our under-$500 guide.

The HopCycle EB3L, our #3 pick until October 2026, stated a 750 W rated motor and a 20 mph top mode on a 26-inch hardtail; its Amazon listing was discontinued that month. Its review stays up and points to the closest in-stock match.

Vivi's bikes are the ones whose prices move most around this ceiling. Both Vivi step-throughs that sat at the $400 line in September 2026, the MT26GUL and the C26UL, are no longer sold on Amazon. The Vivi still on sale here is listed as a mention rather than a pick that a price move would push off the list: the Vivi 26-inch Folding ($369.89 as of Oct 31, 8:11 PM EDT, subject to change) is a 55 lb folding hardtail with a 500 W rated motor, a stated 20 mph Class 2 cap with no Class 3 mode, 21 speeds, a front spring fork, a 330 lb payload and a 374 Wh pack. It states no UL certification.

One rung down, Best Electric Bikes Under $300 covers the 14-inch minis and the cheapest full-size hardtails. One rung up, Best Electric Bikes Under $500 is where UL 2849 with a stated 750 W rated motor and a 365-day warranty appears on a single bike. If folding is the whole brief, the best folding e-bikes under $1,000 compares folders further up the price range; if rider weight is, the heavy-rider guide ranks on load ratings; and if indoor charging is the constraint, the UL-certified shortlist filters on paperwork alone. Check your own state's rules in our state-by-state law table.