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) 4dr (148 bhp)
• Year: 2021
• Mileage: 41,000 miles
• Fuel: Petrol, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 131 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 41,000 miles on the clock, this 2021 Audi A3 S Line has done roughly 2,600 fewer miles than a typical 2021 Audi A3. Priced at £18,595, it is advertised £159 above the AskCar estimate of £18,436. 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 recorded this car for sale 53 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at T & S Elite Cars in Hull. 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: £159 (under 1%) over the AskCar estimate of £18,436.

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 53 days.

Price history

AskCar first saw this advert on 10 September 2026 at £18,595. 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 13 April 2027.

It has had 3 MOTs. The latest, on 14 April 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 38,416 miles, which matches the advertised 41,000 miles.

Advertised mileage is about 2,600 miles lower than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

31 other 2021 Audi A3 S Line 1.5 petrol automatic saloons are for sale at UK dealers, from £11,995 to £20,995, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.5 petrol saloon, black. Mileage: 40,772 miles. Price: £16,370, £2,225 less than this car. Dealer: Hilton Garage in Derby. AskCar page: https://askcar.co.uk/car/audi-a3-2021-8cea3620043c
• 2021 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 41,349 miles. Price: £16,498, £2,097 less than this car. Dealer: Lookers Car Hub South Shields in South Shields. AskCar page: https://askcar.co.uk/car/audi-a3-2021-cd81b2494418
• 2021 Audi A3 S Line, 1.5 petrol saloon, black. Mileage: 42,005 miles. Price: £18,495, £100 less than this car. Dealer: Ideal Car Centre in Bilston. AskCar page: https://askcar.co.uk/car/audi-a3-2021-e8fc33b343a6

• The nearest: 2021 Audi A3 S Line, 1.5 petrol saloon, grey, 53 miles from this car. Mileage: 30,115 miles. Price: £18,337, £258 less than this car. Dealer: JCT600 Volkswagen Sheffield in Sheffield. AskCar page: https://askcar.co.uk/car/audi-a3-2021-9772e08d59f4