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: 52,428 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 52,428 miles on the clock, this 2021 Audi A3 S Line has done roughly 8,800 more miles than a typical 2021 Audi A3. Its asking price of £17,495 is £217 above the AskCar estimate of £17,278. The AskCar estimate uses 6,542 UK dealer adverts for the Audi A3, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this car for sale 2 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Shakespeare Street Garage in Lincoln. 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: £217 (1%) over the AskCar estimate of £17,278.

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

AskCar first saw this 2021 Audi A3 advertised 2 days ago. 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 31 October 2026 at £17,495. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 17 November 2026.

It has had 2 MOTs. The latest, on 7 November 2025, passed.

Advisories at the latest test: nearside front inner tyre has a cut but not deep enough to reach the ply or cords sidewall; nearside rear inner tyre has a cut but not deep enough to reach the ply or cords sidewall; nearside front outer tyre slightly damaged/cracking or perishing sidewall slight damage.

Mileage at that test: 42,014 miles, which matches the advertised 52,428 miles.

Advertised mileage is about 8,800 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: 52,896 miles. Price: £16,500, £995 less than this car. Dealer: Holden Kia in Norwich. AskCar page: https://askcar.co.uk/car/audi-a3-2021-e14daca808a1
• 2021 Audi A3 S Line, 1.5 petrol hatchback, white. Mileage: 51,730 miles. Price: £17,995, £500 more than this car. Dealer: Hawco Group in Dundee. AskCar page: https://askcar.co.uk/car/audi-a3-2021-2566e8d139dd
• 2021 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 51,550 miles. Price: £17,300, £195 less than this car. Dealer: ZG Prestige in Bolton. AskCar page: https://askcar.co.uk/car/audi-a3-2021-f0c44cb3a408

• The nearest: 2021 Audi A3 S Line, 1.5 petrol hatchback, blue, 32 miles from this car. Mileage: 58,985 miles. Price: £16,400, £1,095 less than this car. Dealer: Sytner Select Nottingham in Nottingham. AskCar page: https://askcar.co.uk/car/audi-a3-2021-5ed414bf4cce