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: 96,353 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: White
• CO2: 131 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 96,353 miles on the clock, this 2021 Audi A3 S Line has done roughly 52,800 more miles than a typical 2021 Audi A3. Priced at £13,700, it is advertised £856 above the AskCar estimate of £12,844. The AskCar estimate draws on 6,542 Audi A3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. Since we first spotted the advert 55 days ago, the asking price has dropped by £700. Its advertised mileage matches the government's MOT record. It is advertised by Carworld Car Supermarket in Peterborough. 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: £856 (6%) over the AskCar estimate of £12,844.

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 55 days.

Price history

AskCar first saw this advert on 8 September 2026 at £14,400. Its asking price is now £13,700, £700 less. The latest price cut was seen on 7 October 2026.

Price changes recorded:

• 8 September 2026: £14,400
• 7 October 2026: £13,700

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 26 May 2027.

It has had 3 MOTs. The latest, on 18 May 2026, passed.

Advisories at the latest test: offside rear tyre worn close to legal limit/worn on edge 3mm.

Mileage at that test: 94,951 miles, which matches the advertised 96,353 miles.

Advertised mileage is about 52,800 miles higher 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, grey. Mileage: 88,000 miles. Price: £14,509, £809 more than this car. Dealer: FM Motor Co in Wembley. AskCar page: https://askcar.co.uk/car/audi-a3-2021-491f3db77418
• 2021 Audi A3 S Line, 1.5 petrol saloon, blue. Mileage: 108,000 miles. Price: £11,995, £1,705 less than this car. Dealer: Dorset Vehicle Sales in Ferndown. AskCar page: https://askcar.co.uk/car/audi-a3-2021-4788a67b2034
• 2021 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 79,653 miles. Price: £15,495, £1,795 more than this car. Dealer: Motor Link London in London. AskCar page: https://askcar.co.uk/car/audi-a3-2021-de221815c838

• The nearest: 2021 Audi A3 S Line, 1.5 petrol saloon, black, 41 miles from this car. Mileage: 36,644 miles. Price: £18,180, £4,480 more than this car. Dealer: Evans Halshaw BYD Milton Keynes in Milton Keynes. AskCar page: https://askcar.co.uk/car/audi-a3-2021-591d7c0e70ce