2021 Audi A3 1.5 TFSI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.5 TFSI 35 S Line S tronic FWD Euro 6 (s/s) 4dr (148 bhp)
• Year: 2021
• Mileage: 41,349 miles
• Fuel: Petrol, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 131 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A3 S Line has covered 41,349 miles, around 2,200 fewer miles than is typical for its age. Its asking price of £16,498 is £1,903 below the AskCar estimate of £18,401. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. The dealer may accept less: this car has been on sale for at least 86 days, and its asking price has been cut by £2,201. We checked its advertised mileage against the government's MOT record, and they match. The seller is Lookers Car Hub South Shields, based in South Shields. 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: £1,903 (10%) under the AskCar estimate of £18,401.

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 6,542 priced Audi A3 adverts across different ages and specifications, as of 2 November 2026.

A 2021 Audi A3 with the 1.5 petrol engine is typically advertised at £18,000: the median of the 191 for sale on AskCar, as of 2 November 2026.

Time on sale

The dealer may accept less. This 2021 Audi A3 has been on sale for at least 86 days, and its asking price has been cut by £2,201. About 6 in 10 of 2021 Audi A3 cars are gone from sale within a month of being advertised: 403 of the 709 first advertised between 7 July 2026 and 29 September 2026.

Price history

AskCar first saw this advert on 8 August 2026 at £18,699. Its asking price is now £16,498, £2,201 less. The latest price cut was seen on 30 October 2026.

Price changes recorded:

• 8 August 2026: £18,699
• 10 August 2026: £18,698
• 18 August 2026: £18,691
• 21 August 2026: £18,690
• 25 August 2026: £18,689
• 30 August 2026: £18,688
• 3 September 2026: £18,687
• 8 September 2026: £18,399
• 11 September 2026: £18,398
• 14 September 2026: £18,397
• 17 September 2026: £17,699
• 22 September 2026: £17,698
• 27 September 2026: £17,697
• 29 September 2026: £17,395
• 7 October 2026: £17,394
• 9 October 2026: £17,391
• 12 October 2026: £17,199
• 16 October 2026: £16,999
• 20 October 2026: £16,998
• 23 October 2026: £16,699
• 27 October 2026: £16,499
• 30 October 2026: £16,498

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 29 June 2027.

It has had 3 MOTs. The latest, on 27 June 2026, passed.

Advisories at the latest test: front inner brake disc worn, pitted or scored, but not seriously weakened.

Mileage at that test: 40,690 miles, which matches the advertised 41,349 miles.

Advertised mileage is about 2,200 miles lower than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

31 other 2021 Audi A3 S Line 1.5 petrol automatic saloons are for sale at UK dealers, from £11,995 to £20,995, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 41,000 miles. Price: £18,595, £2,097 more than this car. Dealer: T & S Elite Cars in Kingston upon Hull. AskCar page: https://askcar.co.uk/car/audi-a3-2021-3efd6aa0f4e5
• 2021 Audi A3 S Line, 1.5 petrol saloon, black. Mileage: 40,772 miles. Price: £16,370, £128 less than this car. Dealer: Hilton Garage in Derby. AskCar page: https://askcar.co.uk/car/audi-a3-2021-8cea3620043c
• 2021 Audi A3 S Line, 1.5 petrol saloon, black. Mileage: 42,005 miles. Price: £18,495, £1,997 more than this car. Dealer: Ideal Car Centre in Bilston. AskCar page: https://askcar.co.uk/car/audi-a3-2021-e8fc33b343a6

• The nearest: 2021 Audi A3 S Line, 1.5 petrol saloon, grey, 5 miles from this car. Mileage: 44,306 miles. Price: £18,463, £1,965 more than this car. Dealer: Lookers Audi Wearside in Sunderland. AskCar page: https://askcar.co.uk/car/audi-a3-2021-0107a0584ca4