2021 Audi A3 1.0 TFSI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.0 TFSI 30 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (108 bhp)
• Year: 2021
• Mileage: 27,780 miles
• Fuel: Petrol, mild hybrid
• Body: Hatchback, 5 doors, 5 seats
• Engine: 1.0 litres, 108 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: White
• CO2: 124 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A3 S Line has covered 27,780 miles, around 15,800 fewer miles than is typical for its age. The AskCar estimate for this car is £18,117. It is priced at £19,000, which is £883 above that estimate. 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 recorded this car for sale 73 days ago. Our latest MOT record expired on 12 October 2026. Check the current position with the dealer. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Junction Autopark Llandudno, based in Llandudno. 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: £883 (4%) over the AskCar estimate of £18,117.

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 1.0 petrol engine is typically advertised at £15,000: the median of the 87 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2021 Audi A3 has been on sale for at least 73 days.

Price history

AskCar first saw this advert on 21 August 2026 at £19,000. 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: the latest record we hold ran out on 12 October 2026; ask the dealer for the current MOT.

It has had 2 MOTs. The latest, on 13 October 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 20,025 miles, which matches the advertised 27,780 miles.

Advertised mileage is about 15,800 miles lower than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

9 other 2021 Audi A3 S Line 1.0 petrol automatic hatchbacks are for sale at UK dealers, from £15,999 to £18,895, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.0 petrol hatchback, white. Mileage: 25,845 miles. Price: £17,210, £1,790 less than this car. Dealer: Big Motoring World Peterborough in Peterborough. AskCar page: https://askcar.co.uk/car/audi-a3-2021-591fade98d83
• 2021 Audi A3 S Line, 1.0 petrol hatchback, white. Mileage: 23,955 miles. Price: £18,070, £930 less than this car. Dealer: Big Motoring World Cannock in Cannock. AskCar page: https://askcar.co.uk/car/audi-a3-2021-6999117dd5f4
• 2021 Audi A3 S Line, 1.0 petrol hatchback, white. Mileage: 31,870 miles. Price: £17,995, £1,005 less than this car. Dealer: The Drivers Gallery in Bromsgrove. AskCar page: https://askcar.co.uk/car/audi-a3-2021-254ff80d0638

• The nearest: 2021 Audi A3 S Line, 1.0 petrol hatchback, blue, 64 miles from this car. Mileage: 31,948 miles. Price: £17,290, £1,710 less than this car. Dealer: Williams Select in Old Trafford. AskCar page: https://askcar.co.uk/car/audi-a3-2021-944b6d50be9c