2021 Audi A4 Avant 2.0 TDI S Line

Overview

• Make: Audi
• Model: A4 Avant
• Trim: S Line
• Version: 2.0 TDI S Line S tronic FWD Euro 6 5dr (160 bhp)
• Year: 2021
• Mileage: 90,002 miles
• Fuel: Diesel, mild hybrid
• Body: Estate, 5 doors, 5 seats
• Engine: 2.0 litres, 160 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Blue
• CO2: 140 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 90,002 miles on the clock, this 2021 Audi A4 Avant S Line has done roughly 30,300 more miles than a typical 2021 Audi A4 Avant. Priced at £14,800, it is advertised £119 below the AskCar estimate of £14,919. The AskCar estimate uses UK dealer asking prices, including 1,232 Audi A4 Avant adverts, and accounts for the car’s age, mileage and specification. We have tracked this advert today. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Marshall Volkswagen Newbury, based in Newbury. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £119 (under 1%) under the AskCar estimate of £14,919.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 1,232 priced Audi A4 Avant adverts across different ages and specifications, as of 4 November 2026.

A 2021 Audi A4 Avant with the 2.0 diesel engine is typically advertised at £18,500: the median of the 95 for sale on AskCar, as of 4 November 2026.

Time on sale

AskCar first saw this 2021 Audi A4 Avant advertised today. About 4 in 10 of 2021 Audi A4 Avant cars are gone from sale within a month of being advertised: 48 of the 109 first advertised between 11 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 4 November 2026 at £14,800. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 19 May 2027.

It has had 3 MOTs. The latest, on 15 May 2026, passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge; offside front tyre worn close to legal limit/worn on edge; nearside rear tyre worn close to legal limit/worn on edge.

Mileage at that test: 78,373 miles, which matches the advertised 90,002 miles.

Advertised mileage is about 30,300 miles higher than the median mileage of a 2021 Audi A4 Avant on AskCar.

Similar cars

18 other 2021 Audi A4 Avant S Line 2.0 diesel automatic estates are for sale at UK dealers, from £8,999 to £22,000, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A4 Avant S Line, 2.0 diesel estate, black. Mileage: 89,437 miles. Price: £18,500, £3,700 more than this car. Dealer: Jack Reid Cars in Carrickfergus. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-072c4c412b54
• 2021 Audi A4 Avant S Line, 2.0 diesel estate, white. Mileage: 89,277 miles. Price: £14,999, £199 more than this car. Dealer: cinch Bellevue in Hook. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-be96804773ba
• 2021 Audi A4 Avant S Line, 2.0 diesel estate, grey. Mileage: 82,481 miles. Price: £16,495, £1,695 more than this car. Dealer: Edinburgh Car Sales in Edinburgh. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-ae9e93329907