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: 58,000 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: Black
• CO2: 142 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2021 Audi A4 Avant S Line is 58,000 miles. Its asking price of £18,750 is £89 below the AskCar estimate of £18,839. The AskCar estimate uses UK dealer asking prices, including 1,251 Audi A4 Avant adverts, and accounts for the car’s age, mileage and specification. We have tracked this advert today. The government's MOT record matches its advertised mileage. It is advertised by PMA Cars NI in Newry. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £89 (under 1%) under the AskCar estimate of £18,839.

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 1,251 priced Audi A4 Avant adverts across different ages and specifications, as of 5 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 5 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 2 October 2026.

Price history

AskCar first saw this advert on 5 November 2026 at £18,750. 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 5 November 2026: valid until 2 July 2027.

It has had 4 MOTs. The latest, on 24 June 2026, passed.

Advisories at the latest test: front tyre worn close to legal limit/worn on edge both front tyres wearing on inner edge.

Mileage at that test: 57,041 miles, which matches the advertised 58,000 miles.

Similar cars

19 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 5 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A4 Avant S Line, 2.0 diesel estate, white. Mileage: 60,000 miles. Price: £17,987, £763 less than this car. Dealer: David Hayton Autostore Penrith in Penrith. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-301c53af4bae
• 2021 Audi A4 Avant S Line, 2.0 diesel estate, black. Mileage: 60,608 miles. Price: £18,149, £601 less than this car. Dealer: Second Chance Car Finance in Wetherby. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-e62692a85e9d
• 2021 Audi A4 Avant S Line, 2.0 diesel estate, white. Mileage: 54,820 miles. Price: £17,995, £755 less than this car. Dealer: P W Millar Ford in Barry. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-a5badf95220c

• The nearest: 2021 Audi A4 Avant S Line, 2.0 diesel estate, black, 45 miles from this car. Mileage: 89,437 miles. Price: £18,500, £250 less than this car. Dealer: Jack Reid Cars in Carrickfergus. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-072c4c412b54