Leapmotor B10 vs MG S5 EV: the compact Chinese EV showdown (2026 UK)

The Leapmotor B10 and MG S5 EV both originate in China, but the companies behind them are structured very differently. MG is a marque of SAIC Motor, one of China's largest state-owned vehicle manufacturers, with production and sales volumes that comfortably underwrite long-term UK warranty claims. Leapmotor is a newer, listed EV specialist that brought in Stellantis as a 50 per cent JV partner in 2023 — the deal that enables UK right-hand-drive production and unlocks Stellantis's European dealer network. That partnership de-risks Leapmotor's UK ambitions substantially, though Leapmotor's standalone balance sheet is smaller than SAIC's. MG's dealer network (155-plus sites) is considerably broader than Leapmotor's 60-plus Stellantis-partner locations — a practical consideration for servicing and support.

Both cars are relatively new to the Chinese market, but early owner intelligence is encouraging for both — with some specific caveats to flag. The B10 earns particularly low complaint rates, helped in part by Stellantis's involvement in suspension and NVH calibration. The MG S5 EV (sold as the 名爵ES5 in China) scores best-in-segment on Autohome, though its Chinese volume is deliberately low — SAIC has positioned it as an export-priority model, meaning the typical UK buyer is more representative of who this car was built for than the typical Chinese buyer. The MG's main gripe in China is a closed infotainment ecosystem; the B10's top complaints centre on road noise at motorway speed and budget interior plastics on lower trims.

At bare OTR, the two cars are almost eerily close in price. The B10 lists at £31,495; with the LEAP-GRANT still being honoured by dealers in July 2026 (confirm before ordering — the original terms expired December 2025), it drops to £29,995. The MG S5 EV SE Long Range also lists at £31,495, but an MG EV Car Grant of £1,500 is available until 30 September 2026, which would bring it to roughly the same money. The Long Range is the one to cross-shop against the B10: at identical price, the S5 EV LR returns 298 WLTP miles versus the B10's 270. But the B10's DC charging at 168 kW is the headline stat that separates it from the field — no other Chinese EV under £35,000 charges this fast.

For the S5 EV, the UK version is arguably better than the Chinese one: UK buyers get wireless CarPlay and Android Auto as standard (the Chinese domestic version has neither), and the Long Range variant uses NMC chemistry rather than the LFP fitted to every Chinese-spec ES5 — meaning denser energy storage and faster charging. For the B10, the picture is more complex. UK buyers receive the same Stellantis-retuned suspension found in the Chinese base market, but they lose out on the headline China specification: the LiDAR-equipped 智驾版 (autonomous driving edition), with its 128-line Hesai ATX sensor, Qualcomm Snapdragon Ride 8650 ADAS chip, and City NOA autonomous motorway and urban driving, is not exported to the UK. The UK chipset (Snapdragon 8155) is an older generation.

These two cars are more complementary than they are rivals — depending on what you actually use a car for, one will be clearly right and the other clearly wrong. If you spend meaningful time on motorways and value DC rapid charging speed, the B10 at 168 kW is in a different class to anything else in its price bracket, and the 4-star NCAP scores of older Chinese competitors simply don't match its 2025 93%/93% adult and child performance. If, on the other hand, you do most of your miles on predictable local journeys, park at home overnight, and want the peace of mind that comes with a seven-year warranty and 155 dealer locations, the MG S5 EV Long Range at £31,495 is a compelling, mature choice. The warranty gap — three years of vehicle cover versus seven — is the single biggest practical differentiator, and it matters most if you plan to keep the car beyond four years. Confirm both the LEAP-GRANT and the MG EV Car Grant with your dealer before signing, as both are OEM-funded and neither is guaranteed beyond their stated dates.