Brompton designed the all-new Electric G Line bike and e-system together, so every part works as a single package for city use and beyond.
From sharp on and off-road handling to simple charging and compact storage, the whole system is built to feel seamless on the road.
- 20-inch wheels , large enough for varied surfaces yet small enough to fold neatly. Supplied with custom puncture-resistant tyres that cope well with gravel, broken tarmac and wet city roads.
- Roller frame , fitted with G Line mudguards and roller wheels as standard, gives full-length spray protection and makes the folded bike easy to manoeuvre through stations, lifts and narrow hallways.
- Fine-tuned motor , assist up to 15 mph for a quicker, more engaging ride. The Brompton G Line electric range tops out at around 50 miles depending on load, route and riding mode, which is plenty for most UK commutes and weekend spins.
- Smart control , handlebar display with Adaptive Range Estimation and Start Assist. You get a realistic picture of how far you can go with your chosen assist level and load before setting off.
- Built for mixed surfaces , UL-certified and fitted with a rugged front carrier block. As an all-terrain electric folding bike, it handles towpaths and light trails as confidently as city tarmac.
- Always current , the companion app provides over-the-air updates and added features without needing a trip to the workshop.
Why the Brompton Electric G Line 4 Speed works as a daily bike
The Brompton G Line folding mechanism is still as quick and compact as you'd expect from Brompton, but the 20-inch wheelset and roller frame give it noticeably more stability when loaded. Adaptive Range Estimation takes the guesswork out of longer rides, and the motor support feels well-matched to the bike rather than bolted on as an afterthought.
Who should consider the 2026 Brompton electric G Line?
If you need a folding e-bike for commuting, mixed-surface rides or light cargo duties, the Brompton G Line electric bike is a strong option. Among the best Brompton bikes we stock, it covers the ground that matters to British riders: proper range, full mudguards and a fold compact enough for small flats and public transport.