Brompton Electric C Line (4-speed) review

Full review

Brompton's electric C Line takes the familiar three-step fold and adds a 250 W rear hub motor and a 345 Wh battery that clicks out in one move. The page lists 17.6 kg with the battery and 13.85 kg without, so the bike can be carried on its own in a way the heavier folders here cannot. The folded package is about 585 x 565 x 270 mm, small enough for under a desk or a train luggage rack.

Torque is 24 Nm, so the motor suits flat and gently rolling city streets rather than steep climbs. Brompton claims up to 90 km on a charge, taking about five hours to fill, but as always that depends on assist mode, rider weight and terrain. The four-speed drivetrain has a 163 percent gear range, braking is by dual pivot calipers, and Lezyne lights and mudguards are included.

Brompton's page does not publish the assist speed limit or a maximum rider weight, so confirm both with the retailer. Optional roller features add a rolling mode when folded. The small 16 in wheels give nimble handling but reward a smooth line on rough surfaces. If your journey mixes riding, trains and carrying, this is the most practical electric folding bike here, though it costs far more than its rivals.