2021 Audi Q3 2.0 TDI S Line
Version: 2.0 TDI 35 S Line S tronic 4WD Euro 6 (s/s) 5dr (148 bhp)
Price: £19,998. Fair price: £1,086 (5%) under the AskCar estimate of £21,084, our expected asking price for this car from its model, age, mileage and specification, drawing on 3,449 priced Audi Q3 adverts on AskCar as of 29 October 2026.
AskCar lists 3,523 used Audi Q3 from 1,644 UK dealerships, as of 29 October 2026.
Overview
- Make
- Audi
- Model
- Q3
- Trim
- S Line
- Version
- 2.0 TDI 35 S Line S tronic 4WD Euro 6 (s/s) 5dr (148 bhp)
- Mileage
- 56,264 miles
- Year
- 2021
- Fuel type
- Diesel
- Body type
- SUV
- Engine
- 2.0 L
- Gearbox
- Automatic
- Power
- 148 bhp
- Seats
- 5
- CO2
- 164 g/km
- Colour
- White
- Doors
- 5
- Driven wheels
- Four Wheel Drive
- Gearbox version
- S tronic
- Engine badge
- TDI
- Emissions standard
- Euro 6
About this car
At 56,264 miles, this 2021 Audi Q3 S Line has covered about 14,000 more miles than other 2021 Audi Q3 cars. Priced at £19,998, it is advertised £1,086 below the AskCar estimate of £21,084. The AskCar estimate uses UK dealer asking prices, including 3,449 Audi Q3 adverts, and accounts for the car’s age, mileage and specification. We first recorded this car for sale 1 day ago. MOT records show an expiry date of 31 July 2027, and the latest recorded mileage is consistent with the advert. The seller is Arnold Clark Dundee Vauxhall / Fiat / Abarth, based in Dundee.
Stock data as of 29 October 2026.
Price history
AskCar first saw this advert on 28 October 2026, 1 day ago.
| Date observed | Asking price |
|---|---|
| 28 October 2026 | £19,998 |
| 29 October 2026 | £19,998 |
Price and mileage comparison
Fair price: £1,086 (5%) under the AskCar estimate of £21,084.
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 3,449 priced Audi Q3 adverts across different ages and specifications, as of 29 October 2026.
Advertised mileage is about 14,000 miles higher than the median mileage of a 2021 Audi Q3 on AskCar.
The advertised mileage is consistent with the last MOT reading.
MOT
MOT: valid until 31 July 2027. 54,821 miles at the last test.
Other matching cars
28 other 2021 Audi Q3 S Line automatic diesel cars are for sale at UK dealers from £13,990 to £27,750, as of 29 October 2026.
The 5 cheapest:
- 2021 Audi Q3. Price: £13,990. Mileage: 118,000 miles. Dealer: Motorland in Peterborough. AskCar page: https://askcar.co.uk/car/audi-q3-2021-9fd36734d4d2
- 2021 Audi Q3. Price: £14,809. Mileage: 133,000 miles. Dealer: FM Motor Co in Wembley. AskCar page: https://askcar.co.uk/car/audi-q3-2021-3e346cc7d68a
- 2021 Audi Q3. Price: £14,899. Mileage: 102,770 miles. Dealer: Audi Technik Centre in Glasgow. AskCar page: https://askcar.co.uk/car/audi-q3-2021-7d4bbf082851
- 2021 Audi Q3. Price: £15,650. Mileage: 98,486 miles. Dealer: Evans Halshaw BYD Milton Keynes in Milton Keynes. AskCar page: https://askcar.co.uk/car/audi-q3-2021-2b4fb57d4ebe
- 2021 Audi Q3. Price: £15,990. Mileage: 86,182 miles. Dealer: Jan Autos in Luton. AskCar page: https://askcar.co.uk/car/audi-q3-2021-f50618c70213
The 28 matching cars have covered 7,909 to 133,000 miles, compared with 56,264 miles for this car.
Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. The AskCar estimate adjusts for these differences.
Browse all Audi Q3 cars for sale · 2021 Audi Q3 price guide
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Photos
1 photo of this car is on its AskCar page.
How to contact the dealer and its opening hours are on this AskCar page.
As of 29 October 2026, AskCar lists 587,923 cars and vans from 12,992 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.