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: 82,481 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: Grey
• CO2: 142 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 82,481 miles on the clock, this 2021 Audi A4 Avant S Line has done roughly 22,800 more miles than a typical 2021 Audi A4 Avant. Its asking price of £16,495 is £722 above the AskCar estimate of £15,773. To work out the AskCar estimate, we analyse UK dealer adverts for 1,232 Audi A4 Avant cars across different ages and specifications. We have tracked this advert for 81 days. Its advertised mileage matches the government's MOT record. The seller is Edinburgh Car Sales, based in Edinburgh. 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: £722 (4%) over the AskCar estimate of £15,773.

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

This 2021 Audi A4 Avant has been on sale for at least 81 days.

Price history

AskCar first saw this advert on 15 August 2026 at £15,995. Its asking price is now £16,495, £500 more.

Price changes recorded:

• 15 August 2026: £15,995
• 23 August 2026: £16,495

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 30 March 2027.

It has had 3 MOTs. The latest, on 30 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 77,673 miles, which matches the advertised 82,481 miles.

Advertised mileage is about 22,800 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, white. Mileage: 89,277 miles. Price: £14,999, £1,496 less 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, black. Mileage: 89,437 miles. Price: £18,500, £2,005 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, blue. Mileage: 90,002 miles. Price: £14,800, £1,695 less than this car. Dealer: Marshall Volkswagen Newbury in Newbury. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-90de791d49fe

• The nearest: 2021 Audi A4 Avant S Line, 2.0 diesel estate, white, 89 miles from this car. Mileage: 60,000 miles. Price: £17,987, £1,492 more than this car. Dealer: David Hayton Autostore Penrith in Penrith. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-301c53af4bae