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: 51,736 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: White
• CO2: 135 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 51,736 miles, this 2021 Audi A3 S Line has covered about 8,200 more miles than other 2021 Audi A3 cars. The dealer is asking £18,999, which is £1,925 above the AskCar estimate of £17,074. To work out the AskCar estimate, we analyse UK dealer adverts for 6,705 Audi A3 cars across different ages and specifications. We first recorded this car for sale 22 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Hawco Group in Aberdeen. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 12 November 2026.

How we estimate prices and check cars

Price

Above the going rate: £1,925 (11%) over the AskCar estimate of £17,074.

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 6,705 priced Audi A3 adverts across different ages and specifications, as of 12 November 2026.

A 2021 Audi A3 with the 1.5 petrol engine is typically advertised at £17,700: the median of the 191 for sale on AskCar, as of 12 November 2026.

Time on sale

This 2021 Audi A3 has been on sale for at least 22 days.

Price history

AskCar first saw this advert on 21 October 2026 at £17,995. Its asking price is now £18,999, £1,004 more.

Price changes recorded:

• 21 October 2026: £17,995
• 11 November 2026: £18,999

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 12 November 2026: valid until 14 June 2027.

It has had 3 MOTs. The latest, on 9 June 2026, passed.

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

Mileage at that test: 48,766 miles, which matches the advertised 51,736 miles.

Advertised mileage is about 8,200 miles higher than the median mileage of a 2021 Audi A3 on AskCar.

Similar cars

57 other 2021 Audi A3 S Line 1.5 petrol automatic hatchbacks are for sale at UK dealers, from £11,495 to £21,995, as of 12 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 51,829 miles. Price: £16,900, £2,099 less than this car. Dealer: Sytner Select Wakefield in Wakefield. AskCar page: https://askcar.co.uk/car/audi-a3-2021-7bd3f80d9252
• 2021 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 51,550 miles. Price: £17,300, £1,699 less than this car. Dealer: ZG Prestige in Bolton. AskCar page: https://askcar.co.uk/car/audi-a3-2021-f0c44cb3a408
• 2021 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 52,428 miles. Price: £17,495, £1,504 less than this car. Dealer: Shakespeare Street Garage in Lincoln. AskCar page: https://askcar.co.uk/car/audi-a3-2021-019e381a240d

• The nearest: 2021 Audi A3 S Line, 1.5 petrol hatchback, blue, 41 miles from this car. Mileage: 41,000 miles. Price: £18,995, the same price as this car. Dealer: Grampian Cars in Macduff. AskCar page: https://askcar.co.uk/car/audi-a3-2021-ff4ecb3467fe