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: 71,439 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: Grey
• CO2: 135 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 71,439 miles on the clock, this 2021 Audi A3 S Line has done roughly 27,800 more miles than a typical 2021 Audi A3. Its asking price of £15,690 is £401 above the AskCar estimate of £15,289. The AskCar estimate uses UK dealer asking prices, including 6,542 Audi A3 adverts, and accounts for the car’s age, mileage and specification. Since we first spotted the advert 10 days ago, the asking price has dropped by £50. We checked its advertised mileage against the government's MOT record, and they match. The seller is Big Motoring World Leeds, based in Leeds. 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: £401 (2%) over the AskCar estimate of £15,289.

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

This 2021 Audi A3 has been on sale for at least 10 days.

Price history

AskCar first saw this advert on 23 October 2026 at £15,740. Its asking price is now £15,690, £50 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 23 October 2026: £15,740
• 24 October 2026: £15,730
• 25 October 2026: £15,720
• 27 October 2026: £15,730
• 28 October 2026: £15,720
• 30 October 2026: £15,710
• 31 October 2026: £15,690

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 30 June 2027.

It has had 3 MOTs. The latest, on 24 June 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 67,775 miles, which matches the advertised 71,439 miles.

Advertised mileage is about 27,800 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: 67,436 miles. Price: £15,590, £100 less than this car. Dealer: Winchmore Hill Car Sales in Nazeing. AskCar page: https://askcar.co.uk/car/audi-a3-2021-ec4146189945
• 2021 Audi A3 S Line, 1.5 petrol hatchback, black. Mileage: 65,895 miles. Price: £16,800, £1,110 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, black. Mileage: 59,270 miles. Price: £16,989, £1,299 more than this car. Dealer: Autobarn Motor Company in Burnley. AskCar page: https://askcar.co.uk/car/audi-a3-2021-aa6f0eaaec11