2020 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) 4dr (148 bhp)
• Year: 2020
• Mileage: 36,684 miles
• Fuel: Petrol, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 131 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 36,684 miles on the clock, this 2020 Audi A3 S Line has done roughly 13,700 fewer miles than a typical 2020 Audi A3. Its asking price of £18,900 is £311 above the AskCar estimate of £18,589. The AskCar estimate draws on 6,542 Audi A3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 40 days ago. Its asking price has since fallen by £600. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Sytner Select Swindon, based in Swindon. 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: £311 (1%) over the AskCar estimate of £18,589.

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 2020 Audi A3 with the 1.5 petrol engine is typically advertised at £16,000: the median of the 134 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2020 Audi A3 has been on sale for at least 40 days.

Price history

AskCar first saw this advert on 23 September 2026 at £19,500. Its asking price is now £18,900, £600 less. The latest price cut was seen on 13 October 2026.

Price changes recorded:

• 23 September 2026: £19,500
• 13 October 2026: £18,900

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 20 August 2027.

It has had 4 MOTs. The latest, on 7 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 35,611 miles, which matches the advertised 36,684 miles.

Advertised mileage is about 13,700 miles lower than the median mileage of a 2020 Audi A3 on AskCar.

Similar cars

12 other 2020 Audi A3 S Line 1.5 petrol automatic saloons are for sale at UK dealers, from £13,990 to £21,200, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A3 S Line, 1.5 petrol saloon, blue. Mileage: 35,520 miles. Price: £16,195, £2,705 less than this car. Dealer: V12 Sports & Classics Ltd -Worksop in Worksop. AskCar page: https://askcar.co.uk/car/audi-a3-2020-1fac43c63c98
• 2020 Audi A3 S Line, 1.5 petrol saloon, black. Mileage: 40,672 miles. Price: £17,104, £1,796 less than this car. Dealer: Lookers Audi Farnborough in Farnborough. AskCar page: https://askcar.co.uk/car/audi-a3-2020-a2e90aaf36b8
• 2020 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 40,975 miles. Price: £17,995, £905 less than this car. Dealer: NSA Motor Vehicles in Milton Keynes. AskCar page: https://askcar.co.uk/car/audi-a3-2020-9d6fc760e872

• The nearest: 2020 Audi A3 S Line, 1.5 petrol saloon, grey, 39 miles from this car. Mileage: 54,806 miles. Price: £16,030, £2,870 less than this car. Dealer: Evans Halshaw MG Banbury in Banbury. AskCar page: https://askcar.co.uk/car/audi-a3-2020-d973fb48c7f9