2021 Audi Q3 2.0 TDI S Line

Overview

• Make: Audi
• Model: Q3
• Trim: S Line
• Version: 2.0 TDI S Line S tronic FWD Euro 6 5dr (147 bhp)
• Year: 2021
• Mileage: 40,326 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 147 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 150 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2021 Audi Q3 S Line is 40,326 miles. Its asking price of £18,651 is £2,439 below the AskCar estimate of £21,090. The AskCar estimate draws on 3,432 Audi Q3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this advert 158 days ago, and its asking price has since fallen by £2,545. Its advertised mileage matches the government's MOT record. The seller is Quality Part X Dunstable, based in Dunstable. 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: £2,439 (11%) under the AskCar estimate of £21,090.

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 158 days.

Price history

AskCar first saw this advert on 28 May 2026 at £21,196. Its asking price is now £18,651, £2,545 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 29 May 2026: £21,196
• 30 May 2026: £21,191
• 2 June 2026: £21,186
• 4 June 2026: £21,181
• 9 June 2026: £21,100
• 16 June 2026: £20,876
• 20 June 2026: £20,871
• 25 June 2026: £20,846
• 27 June 2026: £20,831
• 30 June 2026: £20,801
• 2 July 2026: £20,691
• 4 July 2026: £20,661
• 7 July 2026: £20,656
• 9 July 2026: £20,600
• 12 July 2026: £20,581
• 14 July 2026: £20,546
• 16 July 2026: £20,486
• 18 July 2026: £20,400
• 21 July 2026: £20,391
• 23 July 2026: £20,100
• 26 July 2026: £20,096
• 27 July 2026: £20,000
• 29 July 2026: £19,861
• 31 July 2026: £19,800
• 4 August 2026: £19,796
• 7 August 2026: £19,791
• 10 August 2026: £19,751
• 12 August 2026: £19,661
• 15 August 2026: £19,600
• 18 August 2026: £19,599
• 20 August 2026: £19,586
• 21 August 2026: £19,551
• 24 August 2026: £19,500
• 27 August 2026: £19,485
• 29 August 2026: £19,450
• 1 September 2026: £19,400
• 3 September 2026: £19,395
• 5 September 2026: £19,385
• 16 September 2026: £19,350
• 18 September 2026: £19,300
• 21 September 2026: £19,600
• 25 September 2026: £19,595
• 29 September 2026: £19,500
• 30 September 2026: £19,485
• 3 October 2026: £19,475
• 10 October 2026: £19,400
• 13 October 2026: £19,300
• 16 October 2026: £19,165
• 20 October 2026: £19,100
• 22 October 2026: £19,000
• 24 October 2026: £18,951
• 27 October 2026: £18,846
• 29 October 2026: £18,700
• 31 October 2026: £18,651

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 4 March 2027.

It has had 3 MOTs. The latest, on 5 March 2026, passed.

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

Mileage at that test: 39,958 miles, which matches the advertised 40,326 miles.

Advertised mileage is about 1,700 miles lower 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, grey. Mileage: 40,000 miles. Price: £19,990, £1,339 more than this car. Dealer: Monarch Motor Company in Redditch. AskCar page: https://askcar.co.uk/car/audi-q3-2021-f22f0b3b376c
• 2021 Audi Q3 S Line, 2.0 diesel SUV, blue. Mileage: 33,714 miles. Price: £20,150, £1,499 more than this car. Dealer: Evans Halshaw BYD Chesterfield in Chesterfield. AskCar page: https://askcar.co.uk/car/audi-q3-2021-55725fc3cdfc
• 2021 Audi Q3 S Line, 2.0 diesel SUV, black. Mileage: 49,150 miles. Price: £22,945, £4,294 more than this car. Dealer: Morgan Cars and Commercials in Ballyclare. AskCar page: https://askcar.co.uk/car/audi-q3-2021-b8f08eb5675c

• The nearest: 2021 Audi Q3 S Line, 2.0 diesel SUV, grey, 3 miles from this car. Mileage: 86,182 miles. Price: £15,990, £2,661 less than this car. Dealer: Jan Autos in Luton. AskCar page: https://askcar.co.uk/car/audi-q3-2021-f50618c70213