How we compared them
Every figure below comes from the brand’s own product page, the pinned Amazon listing, or an independent tester, each dated on the product card. Where a brand does not publish a number, the card says “Not published” and so do we; nothing is estimated. Prices on this page are live and dated, so the value verdicts are made on today’s numbers, not last year’s. We have not ridden every one of these; this is exactly what we do instead.
Heybike: the spend-up brand that hides the speed
Heybike is where the value bracket gets its nicest hardware. The Mars 3.0 is the only bike in this comparison with a torque sensor and full suspension, and the only one with both UL 2271 and UL 2849 listed alongside an IP65 rating and a 440 lb load rating. The Ranger S pairs a 750 W motor with a 692 Wh UL-certified pack in a folding frame. If you are willing to spend past $1,000, Heybike is the brand that gives you something for it.
The catch is what Heybike does not say. For the Mars 3.0 the brand publishes no top speed, no class and no weight; the Amazon listing title claims 32 mph, which is above the 28 mph Class 3 ceiling, and an independent tester measured roughly that unrestricted. That is a bike you have to configure to be legal on a path, and the brand leaves that to you. Heybike also rolled its Mars 2.0 Amazon listing over to the 3.0 without a new page, which is why our Mars 3.0 review and Mars 2.0 review now cross-link.
Jasion: the price floor, with a certified surprise
Jasion owns the bottom of the real market. The EB5 is the lightest and cheapest e-bike we list, at about 49.6 lb with a 360 Wh removable pack and a 20 mph ceiling; its 350 W motor is modest and Jasion publishes no class for it. That is the whole bike, and for flat commutes and first e-bikes it is enough. Our EB5 review goes into where it runs out.
The Roamer is the surprise. At a price well below the Mars 3.0’s (both are live on the cards above) it carries UL 2849 certification on the whole electrical system, a 528 Wh removable pack, a 750 W motor, and turn signals plus a brake light fitted from the factory — equipment neither of the other brands includes at any price here. Its weaknesses are stated on its card: mechanical discs, no published weight, no published class, and a listing whose range claim varies depending on which line you read. On price per watt-hour and on certification per dollar, it is the best bike in this comparison, which is why it heads the list.
GoTrax: the brand that publishes the weight
GoTrax sits between the other two, and its distinguishing habit is a good one: it publishes the weight and the load limit on both bikes. The Ranger is a 20 mph fat-tire bike at 500 W and 499 Wh with a thumb throttle — Class 2 in practice, though GoTrax does not formally state a class for it — with a published 264 lb weight limit and a weight of just under 70 lb that the brand does not hide. The F3 is the more interesting bike: a torque sensor, a 672 Wh pack, 58.3 lb, and a selectable Class 1/2/3 so you can run it legally wherever you ride. Read our F3 review and Ranger review for the detail.
The honest complication with GoTrax is where you buy it. We have not been able to pin a stable Amazon listing for either bike, so our buy links for GoTrax go to a tagged Amazon search rather than a specific product page. Check the exact model and battery on the listing you land on, because the original F3 shipped with a smaller pack than the current one.
Head to head on the five numbers
Battery. Ranger S 692 Wh, F3 672 Wh, Mars 3.0 624 Wh, Roamer 528 Wh, Ranger 499 Wh, EB5 360 Wh. On watt-hours per dollar at current prices, the Roamer and the Ranger S are the two to look at; our long-range roundup ranks the whole bracket on this.
Motor and sensor. Four of the six are 750 W rated; the two GoTrax bikes are 500 W. But the F3 and the Mars 3.0 have torque sensors, and on the road that matters more than the extra 250 W. Our pedal-assist guide explains why.
Weight. EB5 49.6 lb, F3 58.3 lb, Ranger 69.7 lb, Ranger S 72 lb. Heybike publishes no weight for the Mars 3.0 and Jasion none for the Roamer. If you carry the bike up stairs, that silence is a spec.
Class and speed. GoTrax states a selectable class on the F3 and a 20 mph top speed on the Ranger. Heybike states Class 3 on the Ranger S and nothing on the Mars 3.0. Jasion states no class on either bike and quotes 28 mph for the Roamer. Our classes and laws guide covers why the missing number is not a detail.
Certification. Mars 3.0 (UL 2271 and UL 2849), Roamer (UL 2849), Ranger S (UL-certified battery). The EB5 and both GoTrax bikes state no standard on the sources we use.
The verdict by budget
Under $500: Jasion, with the EB5, and it is not close; nothing from the other two brands lives here. $500 to $1,000: Jasion again with the Roamer for most riders, GoTrax with the F3 if you pedal and want the torque sensor, GoTrax with the Ranger if you want fat tires. Past $1,000: Heybike, because the Mars 3.0 is the only bike here that genuinely justifies the extra money — provided you set the speed limit yourself, since Heybike will not tell you what it is. Our value e-bike brands guide puts all three in the wider context of the direct-to-consumer brands we cannot link.
