Engwe L20 3.0 Pro · Not sold in the US

Unlocking the Engwe L20 3.0 Pro speed limit: what changes, what it is really like, and where it is legal

By Tested on our own L20 3.0 Pro (Engwe app, display cap set to 28 mph (45 km/h))

We own one. Out of the box the motor stops helping at 15.5 mph (25 km/h), as UK and EU law requires. The display lets you raise that cap. Here is what that does, what it does not do, and — first — where you are and are not allowed to use it.

Read this first. In the UK and EU, an eBike is only a bicycle while assistance stops at 15.5 mph (25 km/h) and the motor is rated at 250 W. Raise the cap and, on a public road or cycle path, it becomes a motor vehicle — one that would need type approval, registration, tax, insurance, a licence and a helmet to ride legally. An unlocked L20 3.0 Pro is for private land with the landowner's permission, and nothing else, in Britain and Europe.

In the United States most states permit Class 3 pedal-assist to 28 mph (45 km/h), which is exactly the ceiling this display allows — but rules differ by state and city, and many paths exclude Class 3. Check yours. We do not sell, ship or fit anything; this page explains an app setting and asks whether you would like the full steps.

On this page
  1. What actually changes
  2. How fast it really goes
  3. How it is done
  4. What to expect, honestly
  5. Questions people ask
  6. Want a proper guide?

What actually changes

Nothing about the motor. It is still the 250 W mid-drive with 100 Nm of torque, still driven by the torque sensor, still drawing from the 720 Wh battery. The only thing that moves is the speed at which the controller stops assisting: from 15.5 mph (25 km/h) up to a maximum of 28 mph (45 km/h).

What that feels like is the part nobody tells you. On a restricted bike you reach 15.5 mph (25 km/h) and hit a wall: the motor drops out, the bike suddenly weighs 33 kg again, and you either slow down or grind. Unlocked, that wall is gone. The assistance fades with your effort instead of cutting, and the bike feels like it is on your side the whole way up the speed range. That is the real reason people do it — not the top speed.

How fast it really goes

Set the cap to 28 mph (45 km/h) and you will not see 28 mph (45 km/h). The L20 3.0 Pro has a 7-speed Shimano Tourney cassette chosen for a 15.5 mph (25 km/h) bike, so above about 15 mph (24 km/h) you are spinning quickly in top gear. In practice it settles at around 19 mph (30 km/h) on the flat unless you pedal very fast. A bigger chainring would move that, but then you are into modifications rather than a setting.

  • Restricted: assistance ends at 15.5 mph (25 km/h), hard stop.
  • Unlocked, realistic: about 19 mph (30 km/h) without the motor cutting, pedalling briskly.
  • Unlocked, on paper: up to 28 mph (45 km/h) — the gearing, not the motor, is what stops you getting there.

How it is done

On the L20 3.0 Pro the assist cap is changed through the Engwe app on your phone, which pairs with the bike and exposes the speed-limit setting — the app currently runs on iPhone. There is no cable, no firmware flash and nothing to buy. Older Engwe displays used an on-screen menu instead:

  1. On the display, hold the + and − (up/down) buttons together for ~2 seconds to open the settings menu.
  2. Find the speed-limit parameter and raise it to the maximum.
  3. A separate setting toggles the readout between km/h and mph.
  4. Exact button combo and menu codes vary by display firmware — check your Engwe manual if yours differs.
  5. Whichever route your bike uses, set it back to 15.5 mph (25 km/h) before riding on any UK or EU public road. It takes ten seconds.

We are putting together the exact, screen-by-screen steps. Leave your details below and we will send them when they are ready.

What to expect, honestly

  • Range drops. Time spent above 15.5 mph (25 km/h) costs battery quickly. Budget for noticeably less than the headline 160 km (99 miles).
  • Warranty. Changing the limiter may affect Engwe's cover — read the terms before you touch it.
  • Brakes and tyres are the same 180 mm hydraulic discs and 20 × 3.0 tyres rated for the bike. They stop it fine; give yourself more room.
  • Insurance. Cycle insurance assumes an EAPC. Ridden unlocked on a road in the UK or EU it is not one, and a claim would fail.

Questions people ask

Is it legal to unlock the Engwe L20 3.0 Pro in the UK?
On public roads, no. A UK eBike (EAPC) must stop assisting at 15.5 mph (25 km/h) and be rated at 250 W. Raise the cap and it is legally a motor vehicle, which would need type approval, registration, tax, insurance and a licence to ride on the road. On private land with the landowner's permission it is fine.
What about the EU?
The same 15.5 mph (25 km/h) limit applies across the EU for a pedelec. Faster pedal-assist bikes (S-pedelecs, up to 28 mph (45 km/h)) exist but are registered as mopeds. Unlocked, the L20 3.0 Pro is private-land only in Europe too.
And in the United States?
Most US states use a three-class system: Class 1 and 2 assist to 20 mph (32 km/h), Class 3 pedal-assist to 28 mph (45 km/h). The L20 3.0 Pro's display lets you raise the cap to 28 mph (45 km/h) — the same ceiling as a Class 3 — and at 250 W it is well under the 750 W US motor limit. Check your own state and city rules, and whether Class 3 bikes are allowed on the paths you use.
How fast does it actually go once unlocked?
Less than the number suggests. Above roughly 15 mph (24 km/h) you are pedalling quickly in the top of the 7-speed Shimano cassette, and in practice it settles around 19 mph (30 km/h) unless you spin very fast. What changes is the feel: the motor no longer cuts out at 15.5 mph (25 km/h), so there is no sudden wall of resistance.
Does unlocking change the motor power?
No. The 250 W mid-drive and its 100 Nm of torque are unchanged; the setting only moves the speed at which assistance stops.
Does it affect the warranty, range or brakes?
It may affect the warranty — check Engwe's terms. Range falls, because you spend more time at higher speed. The hydraulic disc brakes and 20 × 3.0 tyres are the same ones rated for the bike, so leave more room to stop.
Do you sell or fit an unlock kit?
No. Nothing is sold, shipped or fitted from this page. It explains a setting in the Engwe app and asks whether you would like the full steps.

Speeds are given in miles per hour with kilometres per hour in brackets throughout. This page describes a manufacturer app setting and the law as we understand it in September 2026; it is not legal advice, and rules change — check the current position where you ride.