Audi A6 Avant e-tron vs Porsche Taycan Sport Turismo

The Porsche Taycan Sport Turismo costs £17,500 more than the Audi A6 Avant e-tron. For that premium it adds 40 kW more power. The Audi A6 Avant e-tron is not just cheaper - it also offers 86 miles more WLTP range, 56 litres more boot space and 1 more seat (5 versus 4). On EVcarsguide's combined category scores, the Audi A6 Avant e-tron comes out ahead overall.

The Audi A6 Avant e-tron is £17,500 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 £17,620 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 293 miles for the Porsche Taycan Sport Turismo - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Audi A6 Avant e-tron goes roughly 71 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 18-21 minutes.

The Audi A6 Avant e-tron is the easier car for tight UK car parks: it is 79 mm narrower than the Porsche Taycan Sport Turismo. In a standard 2,400 mm bay that leaves about 513 mm of total clearance for the Audi A6 Avant e-tron and about 434 mm of total clearance for the Porsche Taycan Sport Turismo. The Porsche Taycan Sport Turismo also turns in a 0.6 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 Porsche Taycan Sport Turismo. 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.