Audi S6 Avant e-tron vs BMW i7

The BMW i7 costs £9,305 more than the Audi S6 Avant e-tron. For that premium it adds 58 miles more WLTP range. The Audi S6 Avant e-tron is not just cheaper - it also offers 70 kW more power and a 0.8s quicker 0-62mph time. On EVcarsguide's combined category scores, the Audi S6 Avant e-tron comes out ahead overall.

EVcarsguide estimates a real-world motorway range of about 328 miles for the Audi S6 Avant e-tron and 362 miles for the BMW i7 - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The BMW i7 goes roughly 34 miles further between charging stops. A rapid charge to 80% takes around 21 minutes in the Audi S6 Avant e-tron and 34 in the BMW i7, so the Audi S6 Avant e-tron loses less time at each stop. So the BMW i7 stops less often while the Audi S6 Avant e-tron stops for less time - pick on which you would rather do.

The two are within 27 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 477 mm of total clearance for the Audi S6 Avant e-tron and about 450 mm of total clearance for the BMW i7. The Audi S6 Avant e-tron also turns in a 0.8 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 S6 Avant e-tron and 84% for the BMW i7. 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.