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) 5dr Sportback (148 bhp)
• Year: 2021
• Mileage: 26,575 miles
• Fuel: Petrol, mild hybrid
• Body: Hatchback, 5 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: White
• CO2: 135 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 26,575 miles on the clock, this 2021 Audi A3 S Line has done roughly 16,000 fewer miles than a typical 2021 Audi A3. The dealer is asking £18,140, which is £1,488 below the AskCar estimate of £19,628. To work out the AskCar estimate, we analyse UK dealer adverts for 6,645 Audi A3 cars across different ages and specifications. The dealer may accept less. This car has been on sale for at least 99 days, and its asking price is down £4,110. Its advertised mileage matches the government's MOT record. The seller is Big Motoring World Camberley, based in Camberley. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,488 (7%) under the AskCar estimate of £19,628.

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 6,645 priced Audi A3 adverts across different ages and specifications, as of 5 November 2026.

A 2021 Audi A3 with the 1.5 petrol engine is typically advertised at £18,000: the median of the 200 for sale on AskCar, as of 5 November 2026.

Time on sale

The dealer may accept less. This 2021 Audi A3 has been on sale for at least 99 days, and its asking price has been cut by £4,110. About 6 in 10 of 2021 Audi A3 cars are gone from sale within a month of being advertised: 426 of the 756 first advertised between 7 July 2026 and 2 October 2026.

Price history

AskCar first saw this advert on 29 July 2026 at £22,250. Its asking price is now £18,140, £4,110 less. The latest price cut was seen on 5 November 2026.

Price changes recorded:

• 29 July 2026: £22,250
• 30 July 2026: £22,260
• 31 July 2026: £22,250
• 26 September 2026: £18,850
• 5 November 2026: £18,140

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 13 June 2027.

It has had 3 MOTs. The latest, on 6 June 2026, passed.

Advisories at the latest test: rear registration plate insecure but not likely to fall off; offside front tyre has a cut but not deep enough to reach the ply or cords; offside rear tyre has a cut but not deep enough to reach the ply or cords; and 2 more.

Mileage at that test: 26,046 miles, which matches the advertised 26,575 miles.

Advertised mileage is about 16,000 miles lower than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

55 other 2021 Audi A3 S Line 1.5 petrol automatic hatchbacks are for sale at UK dealers, from £11,990 to £21,995, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.5 petrol hatchback, white. Mileage: 27,272 miles. Price: £18,100, the same price as this car. Dealer: Big Motoring World Blue Bell Hill in Blue Bell Hill. AskCar page: https://askcar.co.uk/car/audi-a3-2021-9265373a4648
• 2021 Audi A3 S Line, 1.5 petrol hatchback, red. Mileage: 28,344 miles. Price: £19,599, £1,459 more than this car. Dealer: Lookers Audi Tyneside in Tynemouth. AskCar page: https://askcar.co.uk/car/audi-a3-2021-ce1fdd996dd2
• 2021 Audi A3 S Line, 1.5 petrol hatchback, white. Mileage: 28,922 miles. Price: £19,320, £1,180 more than this car. Dealer: Big Motoring World Blue Bell Hill in Blue Bell Hill. AskCar page: https://askcar.co.uk/car/audi-a3-2021-510d8a8782d8

• The nearest: 2021 Audi A3 S Line, 1.5 petrol hatchback, white, under a mile from this car. Mileage: 36,385 miles. Price: £18,030, £110 less than this car. Dealer: Big Motoring World Camberley in Camberley. AskCar page: https://askcar.co.uk/car/audi-a3-2021-34419e266718