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: 67,436 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: Black
• CO2: 135 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 67,436 miles, this 2021 Audi A3 S Line has covered about 23,800 more miles than other 2021 Audi A3 cars. The dealer is asking £15,590, which is £142 below the AskCar estimate of £15,732. 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 98 days, and its asking price is down £1,000. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at Winchmore Hill Car Sales in Waltham Abbey. 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: £142 (under 1%) under the AskCar estimate of £15,732.

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 98 days, and its asking price has been cut by £1,000. 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 27 July 2026 at £16,590. Its asking price is now £15,590, £1,000 less. The latest price cut was seen on 13 October 2026.

Price changes recorded:

• 28 July 2026: £16,590
• 5 September 2026: £16,000
• 13 October 2026: £15,590

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 10 April 2027.

It failed its MOT on 27 March 2026 (offside front tyre has a cut in excess of the requirements deep enough to reach the ply or cords 1.9mm cords showing on inner edge; offside rear shock absorbers has a serious fluid leak) and passed 1 day later, on 28 March 2026.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge 2.1mm worn badly on inner edge; nearside rear shock absorbers has light misting of oil.

Mileage at that test: 63,961 miles, which matches the advertised 67,436 miles.

Advertised mileage is about 23,800 miles higher than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

49 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 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.5 petrol hatchback, black. Mileage: 65,895 miles. Price: £16,800, £1,210 more than this car. Dealer: Moto Porium in Bradford. AskCar page: https://askcar.co.uk/car/audi-a3-2021-73ef21eb7682
• 2021 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 71,439 miles. Price: £15,690, £100 more than this car. Dealer: Big Motoring World Leeds in Leeds. AskCar page: https://askcar.co.uk/car/audi-a3-2021-8ee864ddeba4
• 2021 Audi A3 S Line, 1.5 petrol hatchback, black. Mileage: 59,270 miles. Price: £16,989, £1,399 more than this car. Dealer: Autobarn Motor Company in Burnley. AskCar page: https://askcar.co.uk/car/audi-a3-2021-aa6f0eaaec11

• The nearest: 2021 Audi A3 S Line, 1.5 petrol hatchback, grey, 7 miles from this car. Mileage: 32,574 miles. Price: £20,330, £4,740 more than this car. Dealer: Prestige Cars Of Essex in Harlow. AskCar page: https://askcar.co.uk/car/audi-a3-2021-86742b42df02