MiRider One GB3 review
The products mentioned in this article are selected or reviewed independently by our journalists. When you buy through links on our site we may earn an affiliate commission, but this never influences our opinion.

MiRider One GB3 review

A folding electric commuter at a palatable price

Our rating

4

2495.00

David Caudery / Our Media

Published: March 20, 2023 at 4:00 pm

Our review
Smart, speedy and small: perfect for short-distance commuters

Pros:

Compact; nippy; clean drivetrain; easy to fold; great control screen

Cons:

No rear light as standard

MiRider’s original One was among my favourite compact, short-distance folding electric bikes.

That bike's design has been refined and the specification improved for the One GB3. MiRider has hiked up the price, but it’s still significantly cheaper than Brompton’s base-model electric, the C Line (£2,995).

As a commuter bike for urban use and rides that incorporate public transport, this latest MiRider is one of the best folding electric bikes around.

MiRider One GB3 frame

The magnesium-framed One GB3 weighs 19.03kg. David Caudery / Our Media

The heart of the One GB3 is its magnesium alloy frame.

MiRider claims choosing magnesium makes for a lighter weight than standard aluminium. Due to the one-piece casting method for its manufacture, and an extensive surface-coating process, it’s also said to be highly corrosion-resistant.

The frame features an upward-sweeping back end, mirrored by a boxy rear swingarm anchored above the chainset, and is held by an air-filled shock absorber.

The suspension is not a design seen commonly on current bikes. David Caudery / Our Media

This type of unified rear-triangle suspension isn’t especially common today. But having the drivetrain contained solely within the rear end of the bike means a constant belt length with no chance of the belt being dropped as the suspension compresses.

The MiRider comes with a good level of adjustability. The telescopic bar-steerer and clever seatpost mean the bike is claimed to fit anyone from 5ft to 6ft 3in.

I’m 6ft 2in, my partner is 5ft and the One GB3 fitted us both. However, it’s worth noting that the saddle height I needed was almost at the post’s upper limit.

MiRider One GB3 drivetrain

MiRider specs its own rear-hub motor. David Caudery / Our Media

The original One relied on just a singlespeed because MiRider didn’t want to use a rear derailleur – having just 16in-diameter wheels would put it precariously close to the ground.

MiRider uses a rear-hub motor of its own design, unlike Brompton and many of its rivals that often use a front-hub motor.

For the One GB, gears are on the menu, via Polish brand Efneo and its clever chainset that houses a three-speed planetary gearbox.

The chainset runs a belt drive. Chains are de rigueur, but this is a brilliant choice for commuting. Belt drives are practically maintenance-free, and there's no grease or oil to dirty your trousers.

A belt drive is a smart low-maintenance choice for an urban commuter. David Caudery / Our Media

The One GB performed brilliantly throughout testing, tackling hot dry summer days, as well as snow, ice and lots and lots of rain, typifying a British winter.

The effective gears range from an easy 1:1 ratio through to a 1:1.79-ratio biggest gear.

In short, this proved to be a very usable range. The lightest gear will get you up steep ramps, and I found the biggest gear helped me keep pace with city traffic.

In a major plus, the gears can also be shifted when standing still, so you won’t get caught out in the wrong gear when starting off from traffic lights or junctions.

You get a front light, but not a back one. David Caudery / Our Media

The gears combine well with the GB3’s electric bike motor. The unit delivers 25 per cent more torque than the original, and that was already quite a peppy unit to begin with.

A new, higher-capacity 7Ah/252Wh battery is packaged in, which MiRider claims could see you up to a range of 45 miles / 72km.

The accuracy of such claims is dependent on who you are and how you ride. I’m around 90kg, and at best I managed 30.56 miles / 49.18km, with 1,017ft / 310m of elevation.

For the sort of distances you’d expect to be covering on a small folding ebike, the actual range is more than ample.

The full-colour head unit display delivers plenty of useful information. David Caudery / Our Media

The new full-colour head unit display is a highlight. It provides plenty of key information in a clear, bright manner. Motor power, distance, time, current battery voltage drawn and speed are all displayed.

It’s all useful stuff and you get a good understanding of the GB3’s power consumption.

The five power modes are too many. I never really found much need to move out of level 2 or 3, which provide enough punch for normal use.

That said, the full-power level 5 is certainly fun to use. The motor control is at your fingertips, via a remote mounted on the left-hand side, next to the grip.

Motor control is via a remote on the handlebar. David Caudery / Our Media

The GB3 also features a power boost button, next to the right-hand brake lever. The thumb trigger dumps a big surge of power, helping to get you away from traffic lights or providing a good shove at the base of a hill. It’s brilliant.

I even took the GB3 onto a local climb that’s around a mile long and undulating with a maximum gradient of 14 per cent. The GB3’s motor never struggled and giving a bit of boost on the steep ramps helped me maintain an impressive average pace up the hill.

The telescopic bar-steerer means the One GB3 should suit anyone from 5ft to 6ft 3in. David Caudery / Our Media

The charger (much like the GB3) is compact, which is great because these are so often bulky items. At just 374g (including UK plug lead), and with a transformer only 135x65x30mm in size, it’s relatively easy to carry with you.

The charge time is short, taking just two and three-quarter hours to charge fully from completely empty.

The system also powers a front light that’s bright enough to light your way on urban streets, although you’ll need to add a rear light for riding after dark.

MiRider One GB3 brakes and folding mechanism

Clarks CMD-24 hydraulic disc brakes impressed in testing. David Caudery / Our Media

Stopping the GB3 is a set of hydraulic disc brakes from fellow UK-based brand Clarks, with its CMD-24 units.

I was impressed by the feel at the lever and the progressive stopping power. There was also good pad clearance, so I didn't get any annoying scrapes or squeaks, even when riding in very wet conditions.

The folding mechanism is as simple as it gets, with a large central hinge (complete with a safety lock) halving the bike's length. A pair of magnets at the front and rear ‘lock’ the two folded halves together.

The simple-to-use central hinge features a safety lock. David Caudery / Our Media

It's then a case of folding down the bars and lowering the telescopic seatpost. It’s all very easy.

A single urethane skate wheel is mounted underneath the bottom bracket. This sits proud of the chainring and enables the bike to be manoeuvred easily when folded. You can even ‘trolley’ the folded bike when holding the seatpost.

The magnetically locking folding pedals are excellent and help keep the folded GB3 compact with little poking out to get caught on things.

At 19.03kg, it isn’t the lightest electric bike you will find, but it was easy enough to lift and move around, on and off trains or into the boot of a car.

Folded, the GB3 measures 770x430x680mm (with the bar and post recessed on the lowest setting). That’s compared to 1,340x575x1,100mm, unfolded.

Folding the MiRider at the end of your ride could not be more straightforward. David Caudery / Our Media

It's also easy to like the way the GB3 rides. The short wheelbase and small wheels make it an easy bike to manoeuvre in tight spots.

Weaving through static traffic, it has the edge on many rivals, helped ably by the well-balanced assistance coming from the rear hub.

The Selle Royal saddle is a good upgrade. David Caudery / Our Media

It feels relatively stable at speed too, compared to other bikes with small wheels, though in this respect it’s not a match for the Mango Dee.Dee’s big-wheel stability, or the Ridgeback Errand’s long-wheelbase balance.

Both of those bikes offer different concepts when it comes to utilitarian bikes.

Finally, the gel-filled Selle Royal saddle is a huge improvement over the original One’s squishy padded unit, offering good levels of comfort and support. That said, if you’re a regular rider you may prefer something a little smaller.

MiRider One GB3 bottom line

The GB3 is worthy of consideration as an alternative to Brompton's electric folding bikes. David Caudery / Our Media

The MiRider is well considered, very well put together and a whole lot of fun to ride.

If your commute sees you flitting between a bike and public transport, it’s better value than its more famous folding rivals, and doesn’t lack for either range or usability.

Product

Brand mirider
Price 2495.00 GBP
Weight 19.0300, KILOGRAM (One Size) -

Features

Fork Magnesium alloy
br_stem D-shaped telescopic stem
br_frame Magnesium alloy
br_motor Mirider rear hub motor 250w/40nm, Samsung 18650 lithium-ion cells internal/removable battery 36v7ah/252Wh, Sine-wave Torque simulation KT controller, Multi-Function colour LCD display
Tyres Schwalbe Green compound Road Cruiser 16 x 1.75”
br_brakes Mirider/Clarks CMD-24 hydraulic disc
br_saddle Selle Royal Gel saddle
br_wheels 16 inch aero rims, Mirider brushless motor rear hub, Mirider 1-piece front hub
br_seatpost Mirider Telescopic seatpost
br_handlebar 60cm Mirider bar
br_availableSizes One Size
Features Gears: Efneo 3 Speed planetary gear box, 111 tooth belt, 179% range

Pedals: MPH magnetic folding pedals

Accessories: Mudguards, Front LED light, kickstand, folding security strap