Leapmotor's B03 brings 242 miles, one trim and no UK price

Leapmotor revealed the B03 on 12 October, a B-segment electric hatchback with a 53kWh battery, up to 242 miles of range on the WLTP test cycle and a single, fully specified trim. B-segment is the industry term for the supermini class, the one the Vauxhall Corsa and Renault 5 occupy. The car goes on sale in Britain in early 2027, and Leapmotor has not announced a UK price.

That missing number is the story of the B03, because every figure below has to be weighed against a price that does not exist yet. What Leapmotor has published is a car with more standard equipment than most rivals and numbers that are competitive rather than dominant.

The numbers that decide whether it works

The battery is 53kWh, which is large for the class. Range is quoted at up to 242 miles on the WLTP cycle, a lab-based cycle that few cars match in the real world, and rarely on a motorway in February. The motor is a 145kW unit, which Leapmotor also quotes as 194PS, driving the front wheels through 200Nm of torque. The 0-62mph time is 7.6 seconds and the top speed is 101mph.

Charging is the part that matters more than the acceleration. The B03 accepts DC charging at up to 133kW, and Leapmotor quotes 10% to 80% in 21 minutes. For a car of this size that is a useful rate, because it turns a motorway stop into a coffee rather than a meal. It also offers vehicle-to-load, which lets it run a kettle or a laptop charger from its own battery.

A heat pump is standard, and that deserves more attention than it usually gets. Small electric cars have historically treated it as an option or left it off, and it is one of the biggest levers on winter range: a resistive heater can take a serious bite out of a 53kWh pack on a cold morning. On the only trim, no buyer has to think about it.

The B03 also uses cell-to-chassis construction, which mounts the cells into the structure rather than a separate pack, and an oil-cooled drive unit that Leapmotor says is lighter and more efficient. The turning circle is 9.8m.

The packaging is the strongest part of the pitch

The B03 measures 4,175mm long, 1,790mm wide and 1,550mm tall, on a wheelbase of 2,605mm. Those are ordinary supermini dimensions, and the interesting part is what Leapmotor has done inside them.

The seats are marketed as LeapFlex, and the useful details are a fold-flat function and rear seat bases that lift up rather than only folding forward. Lifting the base is the trick that gives a tall, flat load area for something awkward, and it is the sort of thing that matters more to owners than a lap time. Beneath the boot floor there is a 90-litre compartment Leapmotor calls the Leap Box, intended for wet and muddy items, and the cargo floor itself has two levels.

Leapmotor describes the result as class-leading. That is a manufacturer's claim rather than a measured figure, but the approach is right: small cars are bought on what they swallow, and a flat floor with a washable box underneath is more useful to most households than a bigger screen.

The cabin, and what one trim means

The dashboard carries a 14.6-inch central touchscreen and an 8.8-inch driver display, running Leapmotor's OS4.0 software with natural voice control. There are 21 driver assistance systems fed by 14 sensors, a long list for the class.

The single trim policy is the more interesting decision. Leapmotor calls it "Everything as Standard", and in the UK the B03 will be sold in one highly specified version rather than a ladder from a cheap entry model to a loaded one. That has an obvious appeal: no haggling over option packs, and a stronger standard specification than a base-spec rival.

It also has a cost. A single trim sets a floor on the price, higher than a car that offers a stripped-out version, and whether that is the right call depends on the number Leapmotor has not published.

What it has to beat

The Renault 5 is the benchmark, because Renault sells it in two battery sizes with published prices. The 40kWh version with 196 miles of range is £21,495 on the road, and the 52kWh version with 267 miles is £23,945, both including the £3,750 Electric Car Grant.

Set the B03 against that and something awkward appears. Its 53kWh battery is a single kilowatt-hour larger than the Renault's biggest pack, and yet its range figure is 25 miles shorter. On the published numbers the Leapmotor is the less efficient of the two, which means the price has to do more work than the specification.

Then there is the car it shares a group with. Leapmotor International is a joint venture led by Stellantis, which owns 51% and sells the cars through its existing retail network, and the obvious stablemate in this class is the Vauxhall Corsa Electric. Vauxhall lists that car at up to 266 miles of WLTP range, 24 miles more than the B03, from a brand with decades of presence on British high streets. The B03 will be sold by the same dealer groups, which makes the comparison unavoidable.

The network is the quiet advantage

Leapmotor began selling in the UK in March 2025 and now has more than 90 retailers, with a commitment to pass 100 by the end of 2026. The B03 does not arrive alone either: the line-up already runs to the T03 city car, the B10 compact SUV, the C10 family SUV and the newly launched B05 hatchback, with a B03X small SUV due before the end of the year.

That network matters more than a badge for a Chinese brand entering a crowded market. Servicing, warranty work and part-exchange all happen at a dealer, and a buyer trading in a five-year-old Corsa wants to hand over the keys somewhere real. Selling through Stellantis sites answers the question that has held back some new entrants.

The market it joins is not short of options. There are 178 battery electric models on sale in the UK, and electric cars took a 28.3% share of September's registrations. The small end is where the growth and the grant money are, which is why the Renault 5, the Nissan Micra, the Kia EV2 and a wave of Chinese rivals are all arriving at once, as our guide to the affordable shelf sets out. The B03 is one of several Leapmotors coming: the B05 hatchback has just launched and a B03X small SUV is due before the end of the year, so the brand intends to cover the class rather than bet on one car.

What is missing

Beyond the price, there is no trim name, no grant eligibility confirmation, no warranty terms, no insurance group and no date more precise than early 2027. None of that is unusual at a reveal, and all of it will decide whether the B03 is a bargain or merely another option.

The car itself looks well judged. A 53kWh battery, 133kW charging, a heat pump as standard and a dual-level boot floor is a strong package for a supermini, and the 242-mile figure is enough for the weekly routine of most households. The comparison with the Renault 5 is closer than Leapmotor would like on efficiency and unknown on price, and the comparison with its own group stablemate is closer still on range.

Everything now rests on a number. If the B03 lands clearly below the Renault 5's £23,945, the efficiency gap stops mattering and the standard equipment starts to look like value. If it lands at the same price, the case gets harder, because the car it has to beat comes from a brand with a much longer record here. Leapmotor has built the car. It has not yet made the argument.