2020 Audi A3 1.5 TFSI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.5 TFSI 35 S Line Manual FWD Euro 6 (s/s) 4dr (148 bhp)
• Year: 2020
• Mileage: 24,000 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Manual
• Drive: Front-wheel drive
• Colour: Black
• CO2: 133 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 24,000 miles on the clock, this 2020 Audi A3 S Line has done roughly 26,400 fewer miles than a typical 2020 Audi A3. The AskCar estimate for this car is £17,555. It is priced at £17,390, which is £165 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. The dealer may accept less: this car has been on sale for at least 89 days, and its asking price has been cut by £590. Its advertised mileage matches the government's MOT record. It is advertised by GTS Automotive in Blackburn. 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: £165 (under 1%) under the AskCar estimate of £17,555.

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

The dealer may accept less. This 2020 Audi A3 has been on sale for at least 89 days, and its asking price has been cut by £590. About half of 2020 Audi A3 cars are gone from sale within a month of being advertised: 226 of the 433 first advertised between 8 July 2026 and 29 September 2026.

Price history

AskCar first saw this advert on 5 August 2026 at £17,980. Its asking price is now £17,390, £590 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 5 August 2026: £17,980
• 23 October 2026: £17,690
• 31 October 2026: £17,390

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 25 November 2026.

It has had 3 MOTs. The latest, on 6 November 2025, passed.

Advisories at the latest test: nearside rear child seat fitted not allowing full inspection of adult belt.

Mileage at that test: 20,794 miles, which matches the advertised 24,000 miles.

Advertised mileage is about 26,400 miles lower than the median mileage of a 2020 Audi A3 on AskCar.

Similar cars

7 other 2020 Audi A3 S Line 1.5 petrol manual saloons are for sale at UK dealers, from £14,998 to £16,499, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 33,418 miles. Price: £16,499, £891 less than this car. Dealer: Available Car Supermarket - Castle Donington in Castle Donington. AskCar page: https://askcar.co.uk/car/audi-a3-2020-974520cf317e
• 2020 Audi A3 S Line, 1.5 petrol saloon, black. Mileage: 34,000 miles. Price: £16,395, £995 less than this car. Dealer: Motor Trust UK Garstang in Preston. AskCar page: https://askcar.co.uk/car/audi-a3-2020-513d9efe3633
• 2020 Audi A3 S Line, 1.5 petrol saloon, black. Mileage: 41,263 miles. Price: £15,499, £1,891 less than this car. Dealer: HPL Preston in Preston. AskCar page: https://askcar.co.uk/car/audi-a3-2020-888a045696a2