The Brompton M6L folds in three places versus two. This makes it more compact than others in its category.
The bike is light enough to carry and lift without excessive effort. Testers could carry it upstairs without much of a struggle.
It folds down small enough to fit in the trunk of a compact car, as standard checked luggage or under a desk.
The 16" wheels allow riders to maneuver around tight corners. They are very responsive.
Users found the saddles on each build to be comfortable. Brompton uses their own saddle or a Brooks saddle on their bikes.
There is a build of the M6L offered with Dynamo lighting.
Schwalbe Marathon Racer tires allow riders to roll smoothly over pavement.
The M-type handlebars are ergonomic.
Testers were pleased with the lock-on grips included with the bike.
Fenders are included on the Brompton M6L.
Brompton includes an attachment for riders that allows them to keep a front bag attached to the bike even in transport.
Experts found the bike easy to fold. Most can fold it in under a minute.
The Brompton M6L is visually appealing.

6 reasons not to buy

The M6L is expensive, but Bromptons enjoy strong resale values.
The bike does not include a rear rack.
One user had issues keeping the seat post secured in place.
The seat post can feel short for riders taller than 6’.
Testers agree that this bike's unusual shifting can initially be a challenge.
At high speeds, the Brompton M6L can feel unstable.

Bottom line

The Brompton M6L is a classy folding bike. It’s very compact and light compared to others in its category. It has six gears. Shifting is a difficult process initially. The bike folds down quickly. It’s best for short commutes at slow speeds. Riders agree the bike is not stable going quickly. The bike is expensive but with ergonomic M-type bars, rear suspension, reliable caliper brakes and a high-quality steel frame most testers were pleased with it.

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