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: 32,574 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

At 32,574 miles, this 2021 Audi A3 S Line has covered about 11,000 fewer miles than other 2021 Audi A3 cars. Its asking price of £20,330 is £1,109 above the AskCar estimate of £19,221. The AskCar estimate uses 6,542 UK dealer adverts for the Audi A3, with adjustments for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 11 days ago. We checked its advertised mileage against the government's MOT record, and they match. The seller is Prestige Cars Of Essex, based in Epping Forest. 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: £1,109 (5%) over the AskCar estimate of £19,221.

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 11 days.

Price history

AskCar first saw this advert on 22 October 2026 at £20,330. 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 7 October 2027.

It has had 3 MOTs. The latest, on 6 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 32,497 miles, which matches the advertised 32,574 miles.

Advertised mileage is about 11,000 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, blue. Mileage: 32,600 miles. Price: £18,995, £1,335 less 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, white. Mileage: 32,000 miles. Price: £17,880, £2,450 less than this car. Dealer: Wembley Prestige Cars in Watford. AskCar page: https://askcar.co.uk/car/audi-a3-2021-80778e445c31
• 2021 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 31,894 miles. Price: £20,750, £420 more than this car. Dealer: Sytner Group Leicester Audi in Leicester. AskCar page: https://askcar.co.uk/car/audi-a3-2021-f9136d8c47ea

• The nearest: 2021 Audi A3 S Line, 1.5 petrol hatchback, black, 7 miles from this car. Mileage: 67,436 miles. Price: £15,590, £4,740 less than this car. Dealer: Winchmore Hill Car Sales in Nazeing. AskCar page: https://askcar.co.uk/car/audi-a3-2021-ec4146189945