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: 25,000 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: Black
• CO2: 135 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Audi A3 S Line has covered 25,000 miles. Its asking price of £20,750 is £1,186 above the AskCar estimate of £19,564. 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 158 days ago. The latest MOT recorded 34,919 miles, above the advertised mileage. Check this with the dealer. Its recorded MOT is valid until 18 February 2027. You can find this car at Firstgear Cars in Hoddesdon. 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: £1,186 (6%) over the AskCar estimate of £19,564.

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 158 days.

Price history

AskCar first saw this advert on 28 May 2026 at £20,750. 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 18 February 2027.

It has had 3 MOTs. The latest, on 19 February 2026, passed.

Advisories at the latest test: nearside rear tyre worn close to legal limit/worn on edge.

Mileage at that test: 34,919 miles. The advert says 25,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 25,400 miles lower than the median mileage of a 2020 Audi A3 on AskCar.

Similar cars

24 other 2020 Audi A3 S Line 1.5 petrol automatic hatchbacks are for sale at UK dealers, from £13,100 to £19,995, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 25,020 miles. Price: £19,495, £1,255 less than this car. Dealer: Josh Houghton Motor Company in Wigan. AskCar page: https://askcar.co.uk/car/audi-a3-2020-f24b73d6770d
• 2020 Audi A3 S Line, 1.5 petrol hatchback, white. Mileage: 28,000 miles. Price: £18,999, £1,751 less than this car. Dealer: SRH Cars (Leeds) in Leeds. AskCar page: https://askcar.co.uk/car/audi-a3-2020-4deb6892c913
• 2020 Audi A3 S Line, 1.5 petrol hatchback, black. Mileage: 30,500 miles. Price: £17,900, £2,850 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, black, 12 miles from this car. Mileage: 31,000 miles. Price: £18,995, £1,755 less than this car. Dealer: Group 1 Automotive Whetstone Audi in Whetstone. AskCar page: https://askcar.co.uk/car/audi-a3-2020-d28e3ce7bd7e