2021 Audi A4 Avant 2.0 TDI S Line
Price: £8,999. Fair price: £153 (1%) under the AskCar estimate of £9,152, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,232 priced Audi A4 Avant adverts on AskCar as of 4 November 2026.
AskCar lists 1,265 used Audi A4 Avant from 842 UK dealerships, as of 4 November 2026.
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: 179,190 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
This 2021 Audi A4 Avant S Line has covered 179,190 miles, around 119,500 more miles than is typical for its age. The dealer is asking £8,999, which is £153 below the AskCar estimate of £9,152. To work out the AskCar estimate, we analyse UK dealer adverts for 1,232 Audi A4 Avant cars across different ages and specifications. This car was first seen in our listings data 48 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Dereham Motor Company, based in Dereham. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 4 November 2026.
Price
Fair price: £153 (1%) under the AskCar estimate of £9,152.
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 48 days.
Price history
AskCar first saw this advert on 17 September 2026 at £8,999. 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 10 April 2027.
It has had 4 MOTs. The latest, on 25 March 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 163,350 miles, which matches the advertised 179,190 miles.
Advertised mileage is about 119,500 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 £13,849 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, grey. Mileage: 108,000 miles. Price: £13,849, £4,850 more than this car. Dealer: Westley Motor Company in Birmingham. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-a6013213f90b
- 2021 Audi A4 Avant S Line, 2.0 diesel estate, black. Mileage: 108,000 miles. Price: £13,995, £4,996 more than this car. Dealer: Enzo Cars & Vans in Blackburn. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-8873dff9afb5
- 2021 Audi A4 Avant S Line, 2.0 diesel estate, grey. Mileage: 100,767 miles. Price: £14,495, £5,496 more than this car. Dealer: Stirling Motors in St Ives. AskCar page: https://askcar.co.uk/car/audi-a4-avant-2021-2796ffaa44e7
Browse all Audi A4 Avant cars for sale · 2021 Audi A4 Avant price guide
More like this
- Used Audi A4 Avant S Line prices
- Used Audi A4 Avant for sale under £10,000
- Used automatic Audi A4 Avant for sale
- Used diesel Audi A4 Avant for sale
- Used Audi A4 Avant for sale near Dereham
As of 4 November 2026, AskCar lists 592,552 cars and vans from 12,964 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.