Dahon Mariner D8 8-Speed 20" Wheel Lightweight Alloy Folding Bike - Silver A

The Dahon Mariner D8 is a lightweight alloy folding bike built for urban commuting and riders who need a compact bike that doesn't compromise on practicality. The frame uses Dahon's patented lock-jaw hinge folding system, which brings the bike down to 850mm x 399mm x 690mm when folded—manageable enough to stash in a car boot, store in a hallway, or carry onto a train. The whole process takes around 30 seconds once you've done it a few times.

At 13kg, the Mariner sits at a reasonable weight for a folding bike of this size. The alloy frame keeps things light without feeling insubstantial, and the hi-tensile steel forks provide a solid platform for the 20-inch wheels. That smaller wheel size is typical for folding bikes and makes the packed-down footprint genuinely compact, though it does mean you'll need to pedal a bit more frequently to maintain momentum on longer stretches compared to a 26-inch wheel bike.

The 8-speed transmission uses a Suntour trigger shifter paired with an aluminium chainset, which gives enough range to handle moderate hills and urban undulations without being overwhelming. The chain is straightforward to maintain, and the gearing sits in the practical middle ground—not a single-speed that forces you to work hard, but not so many gears that you're constantly fiddling with the shifter in town traffic. Both front and rear brakes are Aspe alloy v-brakes, which offer reliable stopping power and are simple to adjust and keep clean.

Day to day, this bike settles into a comfortable upright riding position. The 580mm alloy handlebars aren't particularly wide, which works well for threading through congested streets. The saddle is Dahon's ergo comfort design, and the grips are padded to reduce hand fatigue on rougher road surfaces. The pedals fold away, which prevents them catching on doorframes or walls when you're wheeling the bike around in compact spaces. The frame has mudguard and pannier mounts built in, so you can add weatherproofing and cargo capacity without hunting for adapter brackets.

The Mariner D8 works well for commuters who mix cycling with public transport, people living in flats with limited storage, or anyone who needs a bike that spends as much time in a bag as it does on the road. The 20-inch wheels and modest weight make it easy to manoeuvre on and off buses or trains. Riders tackling long distances regularly or looking for a sports-oriented feel might find the wheel size limiting, but for short urban trips and genuine portability, this is a solid, no-fuss folding bike that does exactly what it's supposed to do.