2021 Audi A3 1.0 TFSI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.0 30 TFSI S Line S tronic FWD Euro 6 4dr (108 bhp)
• Year: 2021
• Mileage: 43,783 miles
• Fuel: Petrol, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 1.0 litres, 108 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 120 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A3 S Line has covered 43,783 miles. Its asking price of £16,290 is £705 below the AskCar estimate of £16,995. To work out the AskCar estimate, we analyse UK dealer adverts for 6,630 Audi A3 cars across different ages and specifications. The dealer may accept less. This car has been on sale for at least 62 days, and its asking price is down £500. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Days Motorpark Cardiff, based in Cardiff. 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: £705 (4%) under the AskCar estimate of £16,995.

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 1.0 petrol engine is typically advertised at £15,000: the median of the 85 for sale on AskCar, as of 4 November 2026.

Time on sale

The dealer may accept less. This 2021 Audi A3 has been on sale for at least 62 days, and its asking price has been cut by £500. About 6 in 10 of 2021 Audi A3 cars are gone from sale within a month of being advertised: 419 of the 741 first advertised between 7 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 3 September 2026 at £16,790. Its asking price is now £16,290, £500 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 3 September 2026: £16,790
• 8 September 2026: £16,640
• 4 November 2026: £16,290

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 29 July 2027.

It has had 3 MOTs. The latest, on 13 July 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 43,067 miles, which matches the advertised 43,783 miles.

Advertised mileage is about 500 miles higher than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

5 other 2021 Audi A3 S Line 1.0 petrol automatic saloons are for sale at UK dealers, from £15,999 to £19,995, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.0 petrol saloon, yellow. Mileage: 46,404 miles. Price: £15,999, £291 less than this car. Dealer: Sidegate Motors in Great Yarmouth. AskCar page: https://askcar.co.uk/car/audi-a3-2021-d94355ab1498
• 2021 Audi A3 S Line, 1.0 petrol saloon, white. Mileage: 40,230 miles. Price: £17,395, £1,105 more than this car. Dealer: Group 1 Automotive Chingford Audi in Chingford. AskCar page: https://askcar.co.uk/car/audi-a3-2021-7c523805809a
• 2021 Audi A3 S Line, 1.0 petrol saloon, white. Mileage: 39,230 miles. Price: £17,499, £1,209 more than this car. Dealer: Fords Of Winsford Car Supermarket in Winsford. AskCar page: https://askcar.co.uk/car/audi-a3-2021-41bd291aee1e

• The nearest: 2021 Audi A3 S Line, 1.0 petrol saloon, black, 120 miles from this car. Mileage: 28,000 miles. Price: £19,995, £3,705 more than this car. Dealer: Prestigio Motor Company in Watford. AskCar page: https://askcar.co.uk/car/audi-a3-2021-26fe8859ed29