2021 Audi Q3 2.0 TDI S Line

Overview

• Make: Audi
• Model: Q3
• Trim: S Line
• Version: 2.0 TDI 35 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
• Year: 2021
• Mileage: 77,398 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 140 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi Q3 S Line has covered 77,398 miles, around 35,400 more miles than is typical for its age. Its asking price of £15,999 is £2,313 below the AskCar estimate of £18,312. To work out the AskCar estimate, we analyse UK dealer adverts for 3,432 Audi Q3 cars across different ages and specifications. We first saw this car advertised 26 days ago. Its asking price has since fallen by £500. You can find this car at DT Vehicle Sales in Nottingham. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Good value: £2,313 (12%) under the AskCar estimate of £18,312.

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 3,432 priced Audi Q3 adverts across different ages and specifications, as of 2 November 2026.

A 2021 Audi Q3 with the 2.0 diesel engine is typically advertised at £20,300: the median of the 75 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2021 Audi Q3 has been on sale for at least 26 days.

Price history

AskCar first saw this advert on 7 October 2026 at £16,499. Its asking price is now £15,999, £500 less. The latest price cut was seen on 1 November 2026.

Price changes recorded:

• 7 October 2026: £16,499
• 9 October 2026: £16,750
• 11 October 2026: £16,499
• 12 October 2026: £16,750
• 13 October 2026: £15,999
• 16 October 2026: £15,500
• 23 October 2026: £18,499
• 27 October 2026: £17,499
• 28 October 2026: £16,999
• 31 October 2026: £16,500
• 1 November 2026: £15,999

Mileage and MOT

Advertised mileage is about 35,400 miles higher than the median mileage of a 2021 Audi Q3 on AskCar.

Similar cars

22 other 2021 Audi Q3 S Line 2.0 diesel automatic SUVs are for sale at UK dealers, from £13,990 to £23,500, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi Q3 S Line, 2.0 diesel SUV, black. Mileage: 81,102 miles. Price: £17,498, £1,499 more than this car. Dealer: Arnold Clark Burton upon Trent Motorstore in Burton upon Trent. AskCar page: https://askcar.co.uk/car/audi-q3-2021-10e03a36b786
• 2021 Audi Q3 S Line, 2.0 diesel SUV, grey. Mileage: 71,018 miles. Price: £17,989, £1,990 more than this car. Dealer: The Hertford Car Company in Hertford. AskCar page: https://askcar.co.uk/car/audi-q3-2021-83c6d3ec5f0c
• 2021 Audi Q3 S Line, 2.0 diesel SUV, white. Mileage: 70,000 miles. Price: £21,445, £5,446 more than this car. Dealer: Morgan Cars and Commercials in Ballyclare. AskCar page: https://askcar.co.uk/car/audi-q3-2021-a05bf45d0483

• The nearest: 2021 Audi Q3 S Line, 2.0 diesel SUV, blue, 30 miles from this car. Mileage: 33,714 miles. Price: £20,150, £4,151 more than this car. Dealer: Evans Halshaw BYD Chesterfield in Chesterfield. AskCar page: https://askcar.co.uk/car/audi-q3-2021-55725fc3cdfc