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: 111,668 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

This 2021 Audi A3 S Line has covered 111,668 miles, around 68,400 more miles than is typical for its age. Priced at £11,990, it is advertised £485 above the AskCar estimate of £11,505. The AskCar estimate draws on 6,630 Audi A3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. Since we first spotted the advert 23 days ago, the asking price has dropped by £950. Its advertised mileage matches the government's MOT record. The seller is Group 1 Assured Ipswich, based in Ipswich. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £485 (4%) over the AskCar estimate of £11,505.

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 6,630 priced Audi A3 adverts across different ages and specifications, as of 4 November 2026.

A 2021 Audi A3 with the 1.5 petrol engine is typically advertised at £18,000: the median of the 194 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2021 Audi A3 has been on sale for at least 23 days.

Price history

AskCar first saw this advert on 12 October 2026 at £12,940. Its asking price is now £11,990, £950 less. The latest price cut was seen on 24 October 2026.

Price changes recorded:

• 12 October 2026: £12,940
• 17 October 2026: £12,490
• 24 October 2026: £11,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 11 October 2027.

It has had 6 MOTs. The latest, on 12 October 2026, passed.

Advisories at the latest test: nearside rear tyre has a cut but not deep enough to reach the ply or cords.

Mileage at that test: 111,688 miles, which matches the advertised 111,668 miles.

Advertised mileage is about 68,400 miles higher than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

54 other 2021 Audi A3 S Line 1.5 petrol automatic hatchbacks are for sale at UK dealers, from £11,995 to £21,995, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 108,000 miles. Price: £12,990, £1,000 more than this car. Dealer: Motor Zone Peterborough in Peterborough. AskCar page: https://askcar.co.uk/car/audi-a3-2021-1ac13350ca25
• 2021 Audi A3 S Line, 1.5 petrol hatchback, white. Mileage: 120,530 miles. Price: £11,995, the same price as this car. Dealer: V12 Sports & Classics Ltd - Hinckley in Hinckley. AskCar page: https://askcar.co.uk/car/audi-a3-2021-b258977de54b
• 2021 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 71,439 miles. Price: £15,680, £3,690 more than this car. Dealer: Big Motoring World Leeds in Leeds. AskCar page: https://askcar.co.uk/car/audi-a3-2021-8ee864ddeba4

• The nearest: 2021 Audi A3 S Line, 1.5 petrol hatchback, grey, 35 miles from this car. Mileage: 23,100 miles. Price: £19,800, £7,810 more than this car. Dealer: Walters Motor Group - Loddon in Norwich. AskCar page: https://askcar.co.uk/car/audi-a3-2021-086787b0735c