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: 65,000 miles
• Fuel: Diesel
• Body: SUV, 5 doors, 5 seats
• Engine: 2.0 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Silver
• CO2: 140 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi Q3 S Line has covered 65,000 miles, around 22,900 more miles than is typical for its age. Priced at £18,488, it is advertised £1,635 below the AskCar estimate of £20,123. The AskCar estimate uses 3,488 UK dealer adverts for the Audi Q3, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 38 days ago. Its asking price has since fallen by £2,400. The government's MOT record matches its advertised mileage. You can find this car at The Car Traders London in Romford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Good value: £1,635 (8%) under the AskCar estimate of £20,123.

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 3,488 priced Audi Q3 adverts across different ages and specifications, as of 4 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 4 November 2026.

Time on sale

This 2021 Audi Q3 has been on sale for at least 38 days.

Price history

AskCar first saw this advert on 27 September 2026 at £20,888. Its asking price is now £18,488, £2,400 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 27 September 2026: £20,888
• 29 September 2026: £19,688
• 30 September 2026: £19,288
• 7 October 2026: £19,388
• 8 October 2026: £18,988
• 21 October 2026: £19,488
• 25 October 2026: £19,288
• 31 October 2026: £19,500
• 1 November 2026: £18,910
• 2 November 2026: £18,900
• 3 November 2026: £18,690
• 4 November 2026: £18,488

Mileage and MOT

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

It has had 4 MOTs. The latest, on 21 April 2026, passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge; offside front tyre worn close to legal limit/worn on edge; nearside rear child seat fitted not allowing full inspection of adult belt.

Mileage at that test: 60,304 miles, which matches the advertised 65,000 miles.

Advertised mileage is about 22,900 miles higher than the median mileage of a 2021 Audi Q3 on AskCar.

Similar cars

21 other 2021 Audi Q3 S Line 2.0 diesel automatic SUVs are for sale at UK dealers, from £14,499 to £23,500, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi Q3 S Line, 2.0 diesel SUV, grey. Mileage: 65,250 miles. Price: £20,945, £2,457 more than this car. Dealer: Morgan Cars and Commercials in Ballyclare. AskCar page: https://askcar.co.uk/car/audi-q3-2021-09aaf788f793
• 2021 Audi Q3 S Line, 2.0 diesel SUV, blue. Mileage: 64,000 miles. Price: £20,395, £1,907 more than this car. Dealer: MC Autosales in Magherafelt. AskCar page: https://askcar.co.uk/car/audi-q3-2021-77950fe7dd51
• 2021 Audi Q3 S Line, 2.0 diesel SUV, silver. Mileage: 66,000 miles. Price: £22,995, £4,507 more than this car. Dealer: Bank Motors in Glasgow. AskCar page: https://askcar.co.uk/car/audi-q3-2021-1610110d9431

• The nearest: 2021 Audi Q3 S Line, 2.0 diesel SUV, black, 12 miles from this car. Mileage: 61,900 miles. Price: £19,990, £1,502 more than this car. Dealer: Prestige Cars Of Essex in Harlow. AskCar page: https://askcar.co.uk/car/audi-q3-2021-f0e9100aab19