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) 5dr Sportback (148 bhp)
• Year: 2020
• Mileage: 36,000 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: Blue
• CO2: 135 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 36,000 miles on the clock, this 2020 Audi A3 S Line has done roughly 14,000 fewer miles than a typical 2020 Audi A3. Priced at £17,864, it is advertised £551 below the AskCar estimate of £18,415. To work out the AskCar estimate, we analyse UK dealer adverts for 6,645 Audi A3 cars across different ages and specifications. We first recorded this car for sale today. Its advertised mileage matches the government's MOT record. You can find this car at Lookers Audi Tyneside in Wallsend. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £551 (2%) under the AskCar estimate of £18,415.

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 6,645 priced Audi A3 adverts across different ages and specifications, as of 5 November 2026.

A 2020 Audi A3 with the 1.5 petrol engine is typically advertised at £16,000: the median of the 148 for sale on AskCar, as of 5 November 2026.

Time on sale

AskCar first saw this 2020 Audi A3 advertised today. About half of 2020 Audi A3 cars are gone from sale within a month of being advertised: 254 of the 483 first advertised between 8 July 2026 and 2 October 2026.

Price history

AskCar first saw this advert on 5 November 2026 at £17,864. 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 5 November 2026: valid until 13 April 2027.

It has had 4 MOTs. The latest, on 31 March 2026, passed.

Advisories at the latest test: nearside front tyre slightly damaged/cracking or perishing; offside front tyre slightly damaged/cracking or perishing.

Mileage at that test: 31,789 miles, which matches the advertised 36,000 miles.

Advertised mileage is about 14,000 miles lower than the median mileage of a 2020 Audi A3 on AskCar.

Similar cars

27 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 5 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 34,000 miles. Price: £18,790, £926 more than this car. Dealer: Diamond Motor House in Leeds. AskCar page: https://askcar.co.uk/car/audi-a3-2020-f0d482d05a00
• 2020 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 32,747 miles. Price: £17,789, £75 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, £1,131 more than this car. Dealer: Group 1 Automotive Whetstone Audi in Whetstone. AskCar page: https://askcar.co.uk/car/audi-a3-2020-d28e3ce7bd7e

• The nearest: 2020 Audi A3 S Line, 1.5 petrol hatchback, grey, 33 miles from this car. Mileage: 42,382 miles. Price: £17,599, £265 less than this car. Dealer: Motorpoint Stockton-on-Tees in Stockton-on-Tees. AskCar page: https://askcar.co.uk/car/audi-a3-2020-356ac25a4955