Audi SQ6 e-tron vs Mercedes-Benz EQS

The Mercedes-Benz EQS costs £4,115 more than the Audi SQ6 e-tron. For that premium it adds 126 miles more WLTP range and 96 litres more boot space. The Audi SQ6 e-tron is not just cheaper - it also offers 111 kW more power. On EVcarsguide's combined category scores, the Audi SQ6 e-tron comes out ahead overall.

EVcarsguide estimates a real-world motorway range of about 304 miles for the Audi SQ6 e-tron and 392 miles for the Mercedes-Benz EQS - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Mercedes-Benz EQS goes roughly 88 miles further between charging stops. A rapid charge to 80% takes around 21 minutes in the Audi SQ6 e-tron and 31 in the Mercedes-Benz EQS, so the Audi SQ6 e-tron loses less time at each stop. So the Mercedes-Benz EQS stops less often while the Audi SQ6 e-tron stops for less time - pick on which you would rather do.

The Mercedes-Benz EQS is the easier car for tight UK car parks: it is 39 mm narrower than the Audi SQ6 e-tron. In a standard 2,400 mm bay that leaves about 474 mm of total clearance for the Mercedes-Benz EQS and about 435 mm of total clearance for the Audi SQ6 e-tron. The Mercedes-Benz EQS also turns in a 1.2 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 Audi SQ6 e-tron and 84% for the Mercedes-Benz EQS. 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.