Audi S6 Avant e-tron vs Audi S6 Sportback e-tron

The Audi S6 Avant e-tron costs £1,800 more than the Audi S6 Sportback e-tron. On the headline specs that premium buys little measurable advantage - the two are closely matched on range, charging and space. On EVcarsguide's combined category scores, the Audi S6 Sportback e-tron comes out ahead overall.

The Audi S6 Sportback e-tron is £1,800 cheaper to buy. Running costs are almost identical - about £168 a year either way, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the Audi S6 Sportback e-tron comes out roughly £1,840 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 328 miles for the Audi S6 Avant e-tron and 342 miles for the Audi S6 Sportback e-tron - effectively matched, and both well below their WLTP figures because sustained high speed is the hardest case for an EV. Both rapid-charge to 80% in a similar time, around 21-21 minutes.

The two are within 0 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 477 mm of total clearance for the Audi S6 Sportback e-tron.

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 Audi S6 Sportback e-tron. 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.