Quick Answer
Staying on the Right Side of the LawIn the UK, an EAPC (Electrically Assisted Pedal Cycle) must meet specific criteria to be treated as a normal bicycle. If it does not meet these, it is legally a moped.What is Legal?Motor power maximum of 250 Watts.Assistance must stop at 15.5 m...
Key Information
- Last Updated:
- 2 May 2026
- Category:
- Commuter Bikes
- Reading Time:
- 1 min read
Staying on the Right Side of the Law
In the UK, an EAPC (Electrically Assisted Pedal Cycle) must meet specific criteria to be treated as a normal bicycle. If it does not meet these, it is legally a moped.
What is Legal?
- Motor power maximum of 250 Watts.
- Assistance must stop at 15.5 mph (25 km/h).
- You must be over 14 years old to ride one.
The Danger of Tuning Kits
Fitting a "dongle" or tuning kit to make your bike go faster than 15.5 mph is illegal for road use. It can lead to points on your driving licence, a fine, and the seizure of your bike. It also voids your warranty and insurance.
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I've just started commuting on my e-bike in Manchester. Great reminder of the rules – always check your speed and keep it below 15.5 mph!
Hi there, just wondering if I can still ride my E-bike on cycle paths once it's tuned over 15.5 mph? Cheers!
I've been eyeing up these tuning kits but worried about the legalities. Any of you lot tried one without getting in trouble? Cheers!
Just a heads-up, if you're tinkering with your e-bike's controller to push it beyond 25km/h, remember to adjust your cadence sensor too for optimal performance.