MG IM6 vs Polestar 3 (2024-2025)

The Polestar 3 costs £21,905 more than the MG IM6. For that premium it adds 50 miles more WLTP range. The MG IM6 is not just cheaper - it also offers 146 kW faster peak rapid charging, 181 litres more boot space and 80 kW more power. On EVcarsguide's combined category scores, the Polestar 3 comes out ahead overall.

The MG IM6 is £21,905 cheaper to buy. Running costs are almost identical - about £176 a year either way, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the MG IM6 comes out roughly £21,785 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 275 miles for the MG IM6 and 365 miles for the Polestar 3 - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Polestar 3 goes roughly 91 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 17-22 minutes.

The two are within 20 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 432 mm of total clearance for the Polestar 3 and about 412 mm of total clearance for the MG IM6. The MG IM6 also turns in a 1.6 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 MG IM6 and 84% for the Polestar 3. 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.