⚙️ The Torque Wars: More Grunt, But at What Cost?
The torque wars are heating up, with Bosch releasing a rare firmware update to boost both torque and power to compete with the new DJI motor. But before getting too excited about extra grunt, it’s worth asking: what does more torque really mean — and what does it cost you in the long run?
⚡ What Is Torque, Really?
Torque is the oomph that gives you a strong push off the mark or up a hill. Higher torque means more assistance, easier hill climbs, and quicker acceleration. Generally, more expensive e-bikes come with higher-torque motors, while more affordable ones offer gentler assistance. But beyond the purchase price, there are hidden trade-offs worth understanding.
🔋 Battery Drain and Lifespan
More torque means the motor delivers more power — and draws more current from your battery. The result is shorter range per charge and more frequent recharging, which shortens battery life. To keep range the same, you’ll need a larger battery, adding cost and weight.
However, a larger battery also allows better battery management. If you keep the charge between 20–80% (or ideally 30–70%), you can extend its lifespan by up to six times. So while high-torque motors drain faster, smart charging habits can make a big difference.
⚙️ Drivetrain Longevity
Your drivetrain — the cranks, chain, cassette and derailleur — also feels the torque. Shimano’s CUES groupsets are designed specifically for e-bikes and can last up to three times longer than standard components. Still, a lower-torque motor naturally puts less strain on these parts, often resulting in up to 50% longer life for chains and cassettes. Less torque means less stress, less cost, and fewer replacements.
🚴 The Real-World Trade-Off
In Australia, e-bike assistance cuts out at 25 km/h, so extra torque really only helps on steep hills or with heavy loads. With a lower-torque bike, you can simply climb a little slower — say 15 km/h instead of 23 km/h — and still stay comfortably within the assistance range. You’ll still reach the top; it’ll just take a little longer, and your e-bike will thank you with a much longer lifespan.
❤️ Staying Active Is the Point
Most of us choose e-bikes to stay active, not to stop pedalling. The electric assist is there to help us ride further, not to remove effort altogether. That’s why a slightly lower-torque motor can be a good thing. You still get plenty of help, but your legs stay engaged, your heart rate stays up, and the ride feels more natural. In that sense, choosing a lower-torque setup isn’t a compromise — it’s a smarter balance between fitness, fun, and long-term value.
🧩 The Bottom Line
If you’re a serious mountain biker chasing every bit of performance, that 85 Nm motor might be worth it. But for most riders, the trade-off is clear:A lower-torque e-bike costs less upfront, lasts longer, keeps you fitter, and still gets you up every hill — just a little slower.