BMW iX3 (2021-2025) vs MG S6 EV

The BMW iX3 costs £20,855 more than the MG S6 EV. For that premium it adds 30 kW more power and a 2.4s quicker 0-62mph time. The MG S6 EV is not just cheaper - it also offers 50 miles more WLTP range, 164 litres more boot space and lower energy use, 166 versus 195 Wh/km. On EVcarsguide's combined category scores, the MG S6 EV comes out ahead overall.

The MG S6 EV is £20,855 cheaper to buy. The MG S6 EV is cheaper to charge, roughly £184 a year versus £216 for the BMW iX3, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the MG S6 EV comes out roughly £21,015 cheaper overall. These figures cover list price and home charging only - insurance, servicing, tyres and depreciation will move the real total.

EVcarsguide estimates a real-world motorway range of about 196 miles for the BMW iX3 and 232 miles for the MG S6 EV - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The MG S6 EV goes roughly 35 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 34-38 minutes.

The two are within 21 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 509 mm of total clearance for the BMW iX3 and about 488 mm of total clearance for the MG S6 EV. The MG S6 EV also turns in a 1.0 m tighter circle, which helps with U-turns and multi-storey ramps.

Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the BMW iX3 and 84% for the MG S6 EV. That is close enough that capacity loss should not decide between them. Both use NMC-type cells, so for daily use keep the charge limit near 80% to slow degradation. Both batteries carry a 8-year manufacturer warranty.