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: 33,714 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 147 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Blue
• CO2: 149 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 33,714 miles on the clock, this 2021 Audi Q3 S Line has done roughly 8,300 fewer miles than a typical 2021 Audi Q3. The dealer is asking £20,150, which is £1,687 below the AskCar estimate of £21,837. 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 23 days ago. Its asking price has since fallen by £690. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Evans Halshaw BYD Chesterfield, based in Chesterfield. 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

Fair price: £1,687 (7%) under the AskCar estimate of £21,837.

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 23 days.

Price history

AskCar first saw this advert on 10 October 2026 at £20,840. Its asking price is now £20,150, £690 less. The latest price cut was seen on 20 October 2026.

Price changes recorded:

• 10 October 2026: £20,840
• 13 October 2026: £20,600
• 16 October 2026: £20,340
• 20 October 2026: £20,150

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 20 July 2027.

It has had 3 MOTs. The latest, on 21 July 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 33,137 miles, which matches the advertised 33,714 miles.

Advertised mileage is about 8,300 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, black. Mileage: 29,913 miles. Price: £22,317, £2,167 more than this car. Dealer: JCT600 Boston Audi in Boston. AskCar page: https://askcar.co.uk/car/audi-q3-2021-a6a1d1547f7c
• 2021 Audi Q3 S Line, 2.0 diesel SUV, grey. Mileage: 40,000 miles. Price: £19,990, £160 less 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, grey. Mileage: 40,326 miles. Price: £18,651, £1,499 less than this car. Dealer: Quality Part X Dunstable in Dunstable. AskCar page: https://askcar.co.uk/car/audi-q3-2021-77e2da1d904f

• The nearest: 2021 Audi Q3 S Line, 2.0 diesel SUV, grey, 30 miles from this car. Mileage: 77,398 miles. Price: £15,999, £4,151 less than this car. Dealer: DT Vehicle Sales in Nottingham. AskCar page: https://askcar.co.uk/car/audi-q3-2021-2f3127b8d2ff