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: 41,000 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: Blue
• CO2: 135 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 41,000 miles on the clock, this 2021 Audi A3 S Line has done roughly 2,600 fewer miles than a typical 2021 Audi A3. The dealer is asking £18,995, which is £624 above the AskCar estimate of £18,371. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. This car was first seen in our listings data 33 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Grampian Cars, based in Macduff. 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: £624 (3%) over the AskCar estimate of £18,371.

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

This 2021 Audi A3 has been on sale for at least 33 days.

Price history

AskCar first saw this advert on 30 September 2026 at £18,995. 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: valid until 6 June 2027.

It has had 5 MOTs. The latest, on 28 May 2026, passed.

Advisories at the latest test: front brake disc worn, pitted or scored, but not seriously weakened; rear brake disc worn, pitted or scored, but not seriously weakened; offside front tyre worn close to legal limit/worn on edge inner edge worn.

Mileage at that test: 36,130 miles, which matches the advertised 41,000 miles.

Advertised mileage is about 2,600 miles lower than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

49 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 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 41,270 miles. Price: £17,507, £1,488 less than this car. Dealer: Cargem in Rainham. AskCar page: https://askcar.co.uk/car/audi-a3-2021-43f7591315bd
• 2021 Audi A3 S Line, 1.5 petrol hatchback, white. Mileage: 40,663 miles. Price: £19,014, the same price as this car. Dealer: Lookers Audi Wearside in Sunderland. AskCar page: https://askcar.co.uk/car/audi-a3-2021-26c3e7fac143
• 2021 Audi A3 S Line, 1.5 petrol hatchback, black. Mileage: 40,655 miles. Price: £17,995, £1,000 less than this car. Dealer: Taunton Road Car Centre in Bridgwater. AskCar page: https://askcar.co.uk/car/audi-a3-2021-45aef62331d2

• The nearest: 2021 Audi A3 S Line, 1.5 petrol hatchback, white, 85 miles from this car. Mileage: 51,730 miles. Price: £17,995, £1,000 less than this car. Dealer: Hawco Group in Dundee. AskCar page: https://askcar.co.uk/car/audi-a3-2021-2566e8d139dd