2021 Audi A3 1.5 TFSI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.5 TFSI 35 S Line Manual FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
• Year: 2021
• Mileage: 44,792 miles
• Fuel: Petrol
• Body: Hatchback, 5 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Manual
• Drive: Front-wheel drive
• Colour: White
• CO2: 136 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2021 Audi A3 S Line is 44,792 miles. Priced at £15,710, it is advertised £649 below the AskCar estimate of £16,359. The AskCar estimate uses UK dealer asking prices, including 6,542 Audi A3 adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 39 days ago. Its asking price has since fallen by £4,490. The government's MOT record matches its advertised mileage. You can find this car at Big Motoring World Blue Bell Hill in Chatham. 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: £649 (3%) under the AskCar estimate of £16,359.

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 39 days.

Price history

AskCar first saw this advert on 24 September 2026 at £20,200. Its asking price is now £15,710, £4,490 less. The latest price cut was seen on 28 October 2026.

Price changes recorded:

• 24 September 2026: £20,200
• 25 September 2026: £16,560
• 26 September 2026: £16,550
• 30 September 2026: £16,540
• 1 October 2026: £16,550
• 6 October 2026: £16,450
• 7 October 2026: £16,460
• 8 October 2026: £16,430
• 9 October 2026: £16,420
• 10 October 2026: £16,400
• 13 October 2026: £16,230
• 16 October 2026: £16,210
• 19 October 2026: £15,870
• 21 October 2026: £15,880
• 28 October 2026: £15,710

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 23 September 2027.

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

There were no advisories at the latest test.

Mileage at that test: 44,797 miles, which matches the advertised 44,792 miles.

Advertised mileage is about 1,200 miles higher than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

20 other 2021 Audi A3 S Line 1.5 petrol manual hatchbacks are for sale at UK dealers, from £12,895 to £18,490, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.5 petrol hatchback, red. Mileage: 44,353 miles. Price: £15,680, the same price as this car. Dealer: Big Motoring World Norwich in Norwich. AskCar page: https://askcar.co.uk/car/audi-a3-2021-708ae2fe8670
• 2021 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 42,466 miles. Price: £16,050, £340 more than this car. Dealer: Hilton Garage in Derby. AskCar page: https://askcar.co.uk/car/audi-a3-2021-891d89d7ab9c
• 2021 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 42,370 miles. Price: £16,490, £780 more than this car. Dealer: Stratstone Amersham Audi in Amersham. AskCar page: https://askcar.co.uk/car/audi-a3-2021-2ac793bc074e

• The nearest: 2021 Audi A3 S Line, 1.5 petrol hatchback, grey, under a mile from this car. Mileage: 26,224 miles. Price: £17,670, £1,960 more than this car. Dealer: Big Motoring World Blue Bell Hill in Blue Bell Hill. AskCar page: https://askcar.co.uk/car/audi-a3-2021-3d5ebf92bd6d