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) 4dr (148 bhp)
• Year: 2021
• Mileage: 53,215 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Manual
• Drive: Front-wheel drive
• Colour: Black
• CO2: 133 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A3 S Line has covered 53,215 miles, around 9,600 more miles than is typical for its age. The AskCar estimate for this car is £16,208. It is priced at £15,799, which is £409 below that estimate. The AskCar estimate uses UK dealer asking prices, including 6,542 Audi A3 adverts, and accounts for the car’s age, mileage and specification. Since we first spotted the advert 5 days ago, the asking price has dropped by £100. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is cinch, based in Nottingham. 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: £409 (2%) under the AskCar estimate of £16,208.

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

AskCar first saw this 2021 Audi A3 advertised 5 days ago. About 6 in 10 of 2021 Audi A3 cars are gone from sale within a month of being advertised: 403 of the 709 first advertised between 7 July 2026 and 29 September 2026.

Price history

AskCar first saw this advert on 28 October 2026 at £15,899. Its asking price is now £15,799, £100 less. The latest price cut was seen on 30 October 2026.

Price changes recorded:

• 28 October 2026: £15,899
• 30 October 2026: £15,799

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 18 March 2027.

It has had 4 MOTs. The latest, on 13 March 2026, passed.

Advisories at the latest test: front brake disc worn, pitted or scored, but not seriously weakened.

Mileage at that test: 47,978 miles, which matches the advertised 53,215 miles.

Advertised mileage is about 9,600 miles higher than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

4 other 2021 Audi A3 S Line 1.5 petrol manual saloons are for sale at UK dealers, from £15,500 to £17,999, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 54,283 miles. Price: £15,500, £299 less than this car. Dealer: Autotrade (Birmingham) in Birmingham. AskCar page: https://askcar.co.uk/car/audi-a3-2021-f53bd309aa6a
• 2021 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 47,969 miles. Price: £17,999, £2,200 more than this car. Dealer: Hawco Group in Aberdeen. AskCar page: https://askcar.co.uk/car/audi-a3-2021-d6788c1e1abc
• 2021 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 43,240 miles. Price: £16,988, £1,189 more than this car. Dealer: Group 1 Automotive Audi Approved Colchester in Colchester. AskCar page: https://askcar.co.uk/car/audi-a3-2021-0442467cd700