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: 50,675 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

With 50,675 miles on the clock, this 2021 Audi A3 S Line has done roughly 7,500 more miles than a typical 2021 Audi A3. Its asking price of £17,459 is £967 above the AskCar estimate of £16,492. The AskCar estimate draws on 6,554 Audi A3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this car for sale today. The government's MOT record matches its advertised mileage. You can find this car at Drift Bridge Walton Audi in Walton-on-Thames. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 9 November 2026.

How we estimate prices and check cars

Price

Fair price: £967 (5%) over the AskCar estimate of £16,492.

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 6,554 priced Audi A3 adverts across different ages and specifications, as of 9 November 2026.

A 2021 Audi A3 with the 1.0 petrol engine is typically advertised at £15,000: the median of the 89 for sale on AskCar, as of 9 November 2026.

Time on sale

AskCar first saw this 2021 Audi A3 advertised today. About 6 in 10 of 2021 Audi A3 cars are gone from sale within a month of being advertised: 448 of the 795 first advertised between 11 July 2026 and 6 October 2026.

Price history

AskCar first saw this advert on 9 November 2026 at £17,459. 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 9 November 2026: valid until 19 August 2027.

It has had 4 MOTs. The latest, on 20 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 44,477 miles, which matches the advertised 50,675 miles.

Advertised mileage is about 7,500 miles higher than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

6 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 9 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, £1,460 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, black. Mileage: 43,783 miles. Price: £16,290, £1,169 less than this car. Dealer: Days Motorpark Cardiff in Cardiff. AskCar page: https://askcar.co.uk/car/audi-a3-2021-9f61b144cbb9
• 2021 Audi A3 S Line, 1.0 petrol saloon, white. Mileage: 40,230 miles. Price: £17,395, £64 less than this car. Dealer: Group 1 Automotive Chingford Audi in Chingford. AskCar page: https://askcar.co.uk/car/audi-a3-2021-7c523805809a

• The nearest: 2021 Audi A3 S Line, 1.0 petrol saloon, black, 20 miles from this car. Mileage: 28,000 miles. Price: £19,995, £2,536 more than this car. Dealer: Prestigio Motor Company in Watford. AskCar page: https://askcar.co.uk/car/audi-a3-2021-26fe8859ed29