Audi A6 Avant e-tron vs BMW iX

The BMW iX costs £6,705 more than the Audi A6 Avant e-tron. For that premium it adds 120 kW more power. The Audi A6 Avant e-tron is not just cheaper - it also offers 75 kW faster peak rapid charging. On EVcarsguide's combined category scores, the Audi A6 Avant e-tron comes out ahead overall.

The Audi A6 Avant e-tron is £6,705 cheaper to buy. Running costs are almost identical - about £152 a year either way, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the Audi A6 Avant e-tron comes out roughly £6,705 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 364 miles for the Audi A6 Avant e-tron and 355 miles for the BMW iX - effectively matched, and both well below their WLTP figures because sustained high speed is the hardest case for an EV. A rapid charge to 80% takes around 21 minutes in the Audi A6 Avant e-tron and 35 in the BMW iX, so the Audi A6 Avant e-tron loses less time at each stop.

The Audi A6 Avant e-tron is the easier car for tight UK car parks: it is 83 mm narrower than the BMW iX. In a standard 2,400 mm bay that leaves about 513 mm of total clearance for the Audi A6 Avant e-tron and about 430 mm of total clearance for the BMW iX. The Audi A6 Avant e-tron also turns in a 0.5 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 A6 Avant e-tron and 84% for the BMW iX. 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.