Commuter e-bikes to consider for steep hills

What actually gets you up a steep hill

"Steep" here means 10% or more: the road rises 10 feet for every 100 feet you ride. On a regular bike that is the kind of hill where most people stand up or get off and walk. "Hilly" means longer or frequent climbs around 6 to 8%. If you are not sure, ask yourself whether you would walk it on a normal bike. If yes, plan for steep. Cycling directions in many map apps also show an elevation profile for your route.

1. Motor torque, not watts

Torque (newton-meters, Nm) is the turning force that moves you up a slope from a slow speed. Watts describe power at speed. Two bikes with the same "750 W" label can climb very differently. Our provisional screen for steep routes asks 75 Nm of advertised torque from a hub motor (also rated 750 W) or 65 Nm from a mid-drive; for hilly routes, 65 Nm (hub, 500 W) or 55 Nm (mid-drive). Bikes a little under the line (down to 60 Nm for a hub, 55 Nm for a mid-drive, on steep routes) stay as conditional candidates you should test ride; below that, the chat won't put them forward for steep routes. This is a screen, not a climbing test: gearing, how fast you pedal, your load and how long the motor can keep up its output all decide whether a bike gets up your hill.

One caution: brands publish torque inconsistently. Some quote peak figures, others continuous ones, and nobody tests them the same way. Every torque number on this page is the brand's own figure. Use it to sort bikes into groups, not to split hairs between 80 and 85 Nm.

2. Where the motor sits

A mid-drive motor turns the cranks, so it works through the bike's gears. Shift down on a climb and the motor keeps spinning at an efficient speed, the way your legs would. A hub motor sits in the wheel and pushes it directly. Hub-motor bikes are often cheaper and often come with a throttle, but on long steep climbs a hub motor can't use the bike's gears, so it slows down and works harder. That is why our rules prefer a mid-drive for hilly and steep routes and screen the two motor types separately: a mid-drive's newton-meters aren't comparable to a hub's. The trade-off: mid-drives cost more and wear chains and cassettes faster, because all the power goes through them.

3. Your weight plus everything you carry

The motor has to lift you, the bike and your bags. Our rules add about 10 Nm to the requirement once rider plus cargo reaches 250 lb, and about 20 Nm at 330 lb. Check the bike's weight limit too, and what it includes: some brands quote rider plus cargo, others the total including the bike itself. Going over it wears brakes and can void the warranty.

4. Battery size for the climb you actually ride

Climbing uses far more energy than riding on the flat. Our range estimate assumes a steep route costs roughly 1.9 times the energy per mile of a flat one (a working assumption in our rules, not a test result). The "up to 60 miles" on a brand's page usually assumes a light rider, low assist and flat ground. For a hilly commute, look for a bigger battery than the brochure suggests you need, or a place to charge at work.

5. Brakes for the way down

Every steep climb is also a steep descent on a 50 to 80 lb bike. Hydraulic disc brakes usually need less finger force than mechanical (cable) discs, which matters on a long descent. Check the whole brake system on the spec sheet, including rotor size and pads, and whether the brand rates it for a loaded bike on long descents.

6. A throttle helps on hill starts

Stopping at a light halfway up a hill is where riders struggle most. A throttle (Class 2) gets you moving before you have pedaled. Pedal-assist-only bikes (Class 1 and many Class 3) still climb well, but the first pedal stroke is on you. Check your state's rules for throttles and 28 mph bikes on our state law pages.

Before you buy

• If you can, ride your actual hill. Some shops rent e-bikes by the hour, and a rental is cheaper than a return.
• Buy from a seller whose return window you can live with. Returning a 70 lb bike means keeping the box and possibly paying return shipping.
• Look for a safety certification for the whole e-bike (UL 2849) on the product and the label, not just on the box.