BYD ATTO 3 vs MG S6 EV

The MG S6 EV is £995 cheaper to buy. Running costs are almost identical - about £160 a year either way, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the MG S6 EV comes out roughly £875 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 263 miles for the BYD ATTO 3 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 BYD ATTO 3 goes roughly 32 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 35-38 minutes.

The BYD ATTO 3 is the easier car for tight UK car parks: it is 37 mm narrower than the MG S6 EV. In a standard 2,400 mm bay that leaves about 525 mm of total clearance for the BYD ATTO 3 and about 488 mm of total clearance for the MG S6 EV. The BYD ATTO 3 also turns in a 0.7 m tighter circle, which helps with U-turns and multi-storey ramps.

Over a 8-year ownership window EVcarsguide's degradation model projects roughly 90% battery health for the BYD ATTO 3 and 84% for the MG S6 EV. That gives the BYD ATTO 3 a modest edge in retained real-world range. The BYD ATTO 3's LFP-type pack tolerates daily 100% charging, while the MG S6 EV's NMC-type pack lasts longest kept to about 80% for everyday use. Both batteries carry a 8-year manufacturer warranty.