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: 108,000 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: Blue
• CO2: 131 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A3 S Line has covered 108,000 miles, around 64,400 more miles than is typical for its age. Priced at £11,995, it is advertised £127 above the AskCar estimate of £11,868. 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 saw this car advertised 13 days ago. Its asking price has since fallen by £1,000. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Dorset Vehicle Sales in Wimborne. 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: £127 (1%) over the AskCar estimate of £11,868.

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 13 days.

Price history

AskCar first saw this advert on 20 October 2026 at £12,995. Its asking price is now £11,995, £1,000 less. The latest price cut was seen on 28 October 2026.

Price changes recorded:

• 20 October 2026: £12,995
• 28 October 2026: £11,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 10 December 2026.

It has had 5 MOTs. The latest, on 20 October 2026, passed.

Advisories at the latest test: offside front shock absorbers has light misting of oil.

Mileage at that test: 108,484 miles, which matches the advertised 108,000 miles.

Advertised mileage is about 64,400 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 £12,999 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, white. Mileage: 96,353 miles. Price: £13,700, £1,705 more than this car. Dealer: Carworld Car Supermarket in Peterborough. AskCar page: https://askcar.co.uk/car/audi-a3-2021-9cde2178b4ae
• 2021 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 88,000 miles. Price: £14,509, £2,514 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, grey. Mileage: 79,653 miles. Price: £15,495, £3,500 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, blue, 69 miles from this car. Mileage: 39,502 miles. Price: £18,049, £6,054 more than this car. Dealer: Motorpoint Newport in Newport. AskCar page: https://askcar.co.uk/car/audi-a3-2021-c9ea56239f41