2020 Audi A3 1.5 TFSI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.5 TFSI S Line S tronic FWD Euro 6 5dr (147 bhp)
• Year: 2020
• Mileage: 34,000 miles
• Fuel: Petrol
• Body: Hatchback, 5 doors, 5 seats
• Engine: 1.5 litres, 147 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Blue
• CO2: 138 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Audi A3 S Line has covered 34,000 miles, around 16,100 fewer miles than is typical for its age. Its asking price of £18,790 is £59 below the AskCar estimate of £18,849. The AskCar estimate draws on 6,630 Audi A3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert for 40 days. Its advertised mileage matches the government's MOT record. The seller is Diamond Motor House, based in Leeds (Leeds). How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £59 (under 1%) under the AskCar estimate of £18,849.

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 6,630 priced Audi A3 adverts across different ages and specifications, as of 4 November 2026.

A 2020 Audi A3 with the 1.5 petrol engine is typically advertised at £16,000: the median of the 142 for sale on AskCar, as of 4 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 25 September 2026 at £18,790. 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 4 November 2026: valid until 28 April 2027.

It has had 4 MOTs. The latest, on 29 April 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 33,570 miles, which matches the advertised 34,000 miles.

Advertised mileage is about 16,100 miles lower than the median mileage of a 2020 Audi A3 on AskCar.

Similar cars

25 other 2020 Audi A3 S Line 1.5 petrol automatic hatchbacks are for sale at UK dealers, from £13,100 to £20,750, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 32,747 miles. Price: £17,789, £1,001 less than this car. Dealer: Howards Used Car Centre Yeovil in Yeovil. AskCar page: https://askcar.co.uk/car/audi-a3-2020-d4d0718aaa7b
• 2020 Audi A3 S Line, 1.5 petrol hatchback, black. Mileage: 31,000 miles. Price: £18,995, £205 more than this car. Dealer: Group 1 Automotive Whetstone Audi in Whetstone. AskCar page: https://askcar.co.uk/car/audi-a3-2020-d28e3ce7bd7e
• 2020 Audi A3 S Line, 1.5 petrol hatchback, black. Mileage: 30,500 miles. Price: £17,900, £890 less than this car. Dealer: CarTime Nelson/Burnley in Nelson. AskCar page: https://askcar.co.uk/car/audi-a3-2020-0adffffb5147

• The nearest: 2020 Audi A3 S Line, 1.5 petrol hatchback, white, 4 miles from this car. Mileage: 28,000 miles. Price: £18,999, £209 more than this car. Dealer: SRH Cars (Leeds) in Leeds. AskCar page: https://askcar.co.uk/car/audi-a3-2020-4deb6892c913