Heybike Mars 2.0 vs Heybike Cityscape 2.0

What both bikes share

Heybike sells both bikes on Amazon US with the same core: a 750 W rated rear hub motor, UL 2849 certification (the standard NYC Local Law 39 requires for e-bikes sold in the city, and one many apartment buildings ask for before indoor charging), Class 3 with switchable modes (28 mph pedal assist, 20 mph throttle, and a display setting that drops to Class 2 or Class 1 for trails), a removable battery and a 330 lb payload rating. The Mars ships set to Class 2 and unlocks Class 3 in the display; the Cityscape ships as Class 3.

The differences are the bike's intent: fat tire + folder vs trekking commuter. Almost every spec choice between them follows from that.

Specs side-by-side

Where each one wins

Mars 2.0 wins on terrain + fold

If you ride anything except smooth pavement, the Mars wins. The 20×4 fat tires float over sand, gravel, packed snow, RV-park trails — the kinds of surfaces that beat up a regular commuter bike. Full suspension (front + rear) absorbs everything regular suspension misses.

And it folds, to 38.6 × 17.7 × 29.9 inches: small enough for an SUV or an RV's rear cargo bay, and for a sedan trunk if you lay it down. If you want a bike that lives in the back of your car ready for any trip, the Mars is the obvious pick.

Range is also better on paper. The Mars carries 624 Wh against the Cityscape's 468 Wh, a third more battery, though its fat tires give some of that back on pavement.

Cityscape 2.0 wins on road comfort + price

If your ride is paved roads, end of story, the Cityscape wins on every dimension that matters for that use case. The 26×2.4 tires roll faster than the Mars's fat tires (less drag). The step-through frame fits any rider 5'2"-6'2" without the fold-bike compromise. The bike weighs 13 lb less.

And it costs less: $609 at our last check, against $1,199 for the Mars.

The trade-off: mechanical disc brakes (vs the Mars's hydraulic). On flat-ish terrain that's fine. On long downhills under load (loaded with groceries + hilly route home), mechanical brakes fade and you'll wish you had hydraulics. Most US commutes don't have long sustained descents, so this matters less than the spec sheet suggests.

Real-world battery + range

Mars 2.0 (624 Wh, fat tires): Heybike claims up to 70 miles. Our review plans on far less: owner reports cluster at 28 to 35 miles at PAS 3 with occasional throttle, and cold weather under 40°F takes about another 15%.

Cityscape 2.0 (468 Wh, narrower tyres): Heybike claims 50 miles at the lowest assist, with a 165 lb rider on flat ground. At a typical 15 to 20 Wh per mile, our review plans on about 23 to 31 miles of mixed riding.

Run your specific scenario in our range calculator — both bikes' Wh + motor specs are pre-fillable from the review pages.

Build quality + warranty

The warranty terms differ in our reviews. The Mars 2.0 review records 2 years on the frame, motor and battery and 6 months on wear items, once the serial number is registered within 30 days; the Cityscape 2.0 review records 2 years on the frame and 1 year on the battery. Both carry UL 2849 and the same Amazon return window (30 days for direct-Amazon purchases).

Service: Heybike has no US dealer network. If something breaks, you ship the part back to Heybike US (or the whole bike if frame). Amazon's return window covers the first 30 days; after that you're on Heybike's warranty system, which is OK but not great.

Verdict

Easy decision tree:

• You ride only paved roads, want to spend less and don't need to fold: Cityscape 2.0 ($609 at our last check).
• You'll ride on anything except pavement, OR you need the bike to fold for a car / RV / apartment storage: Mars 2.0 ($1,199 at our last check).
• You can't decide: compare the two live prices. If the gap is one you can absorb, the Mars 2.0's bigger battery, hydraulic brakes and fold make it the more versatile bike; if it is not, the Cityscape 2.0 does a paved commute for less and weighs 13 lb less.