NEED TO KNOW
You can find a good used A6 Avant of 2018/2019 vintage for between £25,000 and £30,000. Spend £30,000 to £35,000 on a 2020 model or £40,000 to £50,000 on the faster versions.
The 40 TDI is the most economical, with a combined figure of 49.6mpg. The 50 TDI isn’t quite as good, at 40.4mpg. There’s not a huge amount of difference between the petrol models, with the best being the 40 TFSI at 38.2mpg, followed by the 35.8mpg 45 TFSI, while the 55 TFSI drops down to 33.6mpg.
A small number of cars made between July and September 2020 were fitted with faulty crash sensors for the front side airbags.