2021 Audi A3 1.5 TFSI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.5 TFSI 35 S Line Manual FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
• Year: 2021
• Mileage: 63,297 miles
• Fuel: Petrol
• Body: Hatchback, 5 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Manual
• Drive: Front-wheel drive
• Colour: Black
• CO2: 136 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A3 S Line has covered 63,297 miles, around 20,100 more miles than is typical for its age. The dealer is asking £15,499, which is £727 above the AskCar estimate of £14,772. To work out the AskCar estimate, we analyse UK dealer adverts for 6,630 Audi A3 cars across different ages and specifications. We first saw this car advertised 53 days ago. Its asking price has since fallen by £1,200. We checked its advertised mileage against the government's MOT record, and they match. The seller is Pinetree Car Superstore - Tonypandy, based in Tonypandy. 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: £727 (4%) over the AskCar estimate of £14,772.

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 1.5 petrol engine is typically advertised at £18,000: the median of the 194 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2021 Audi A3 has been on sale for at least 53 days.

Price history

AskCar first saw this advert on 12 September 2026 at £16,699. Its asking price is now £15,499, £1,200 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

• 12 September 2026: £16,699
• 26 September 2026: £15,999
• 29 October 2026: £15,499

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 20 December 2026.

It failed its MOT on 16 December 2025 (nearside front tyre tread depth below requirements of 1.6mm; offside front tyre tread depth below requirements of 1.6mm) and passed later the same day.

Advisories at the latest test: offside rear tyre worn close to legal limit/worn on edge; child seat fitted not allowing full inspection of adult belt.

Mileage at that test: 56,329 miles, which matches the advertised 63,297 miles.

Advertised mileage is about 20,100 miles higher than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

22 other 2021 Audi A3 S Line 1.5 petrol manual hatchbacks are for sale at UK dealers, from £12,795 to £18,490, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.5 petrol hatchback, white. Mileage: 60,000 miles. Price: £14,874, £625 less than this car. Dealer: CarTime in Bury. AskCar page: https://askcar.co.uk/car/audi-a3-2021-dd43add68bec
• 2021 Audi A3 S Line, 1.5 petrol hatchback, white. Mileage: 57,450 miles. Price: £15,180, £319 less than this car. Dealer: Big Motoring World Warrington in Warrington. AskCar page: https://askcar.co.uk/car/audi-a3-2021-5ca99fe74966
• 2021 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 55,385 miles. Price: £15,395, £104 less than this car. Dealer: Motor Range Liverpool in Liverpool. AskCar page: https://askcar.co.uk/car/audi-a3-2021-3903570ed1c0

• The nearest: 2021 Audi A3 S Line, 1.5 petrol hatchback, blue, 11 miles from this car. Mileage: 79,584 miles. Price: £14,999, £500 less than this car. Dealer: Empressive Motor Company in Merthyr Tydfil. AskCar page: https://askcar.co.uk/car/audi-a3-2021-b97ada829b28