2021 Audi A3 1.5 TFSI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.5 TFSI 35 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
• Year: 2021
• Mileage: 33,239 miles
• Fuel: Petrol, mild hybrid
• Body: Hatchback, 5 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 135 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A3 S Line has covered 33,239 miles, around 9,400 fewer miles than is typical for its age. The AskCar estimate for this car is £19,011. It is priced at £18,290, which is £721 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 6,645 Audi A3 cars across different ages and specifications. We first saw this car advertised 2 days ago. Its asking price has since fallen by £400. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by Cars2 in Wakefield. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £721 (3%) under the AskCar estimate of £19,011.

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 6,645 priced Audi A3 adverts across different ages and specifications, as of 5 November 2026.

A 2021 Audi A3 with the 1.5 petrol engine is typically advertised at £18,000: the median of the 200 for sale on AskCar, as of 5 November 2026.

Time on sale

AskCar first saw this 2021 Audi A3 advertised 2 days ago. About 6 in 10 of 2021 Audi A3 cars are gone from sale within a month of being advertised: 426 of the 756 first advertised between 7 July 2026 and 2 October 2026.

Price history

AskCar first saw this advert on 3 November 2026 at £18,690. Its asking price is now £18,290, £400 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 3 November 2026: £18,690
• 4 November 2026: £18,290

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 11 June 2027.

It has had 3 MOTs. The latest, on 21 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 31,543 miles, which matches the advertised 33,239 miles.

Advertised mileage is about 9,400 miles lower than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

55 other 2021 Audi A3 S Line 1.5 petrol automatic hatchbacks are for sale at UK dealers, from £11,990 to £21,995, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.5 petrol hatchback, black. Mileage: 33,794 miles. Price: £18,254, the same price as this car. Dealer: Carbase Lympsham in Lympsham. AskCar page: https://askcar.co.uk/car/audi-a3-2021-b7a2c17f64a6
• 2021 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 32,600 miles. Price: £18,800, £510 more than this car. Dealer: ZG Prestige in Bolton. AskCar page: https://askcar.co.uk/car/audi-a3-2021-45ad94251488
• 2021 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 32,574 miles. Price: £20,330, £2,040 more than this car. Dealer: Prestige Cars Of Essex in Harlow. AskCar page: https://askcar.co.uk/car/audi-a3-2021-86742b42df02