2021 Audi A6, A7, Q5 TFSI e – PHEV models now with bigger 17.9 kWh battery; A6 Avant 50 TFSI e debuts
Audi has announced that the 2021 A6, A7 and Q5 TFSI e models will all get a larger 17.9 kWh lithium-ion battery, offering up to 91 km of range on a full …