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) 5dr Sportback (148 bhp)
• Year: 2020
• Mileage: 16,842 miles
• Fuel: Petrol
• Body: Hatchback, 5 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Manual
• Drive: Front-wheel drive
• Colour: Black
• CO2: 136 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Audi A3 S Line is advertised with 16,842 miles, approximately 33,600 below the typical mileage for its age. The dealer is asking £18,020, which is £251 below the AskCar estimate of £18,271. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. Since we first spotted the advert 22 days ago, the asking price has dropped by £40. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Big Motoring World Cannock, based in Cannock. 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: £251 (1%) under the AskCar estimate of £18,271.

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 22 days.

Price history

AskCar first saw this advert on 11 October 2026 at £18,060. Its asking price is now £18,020, £40 less. The latest price cut was seen on 19 October 2026.

Price changes recorded:

• 11 October 2026: £18,060
• 13 October 2026: £17,880
• 14 October 2026: £18,050
• 16 October 2026: £18,040
• 19 October 2026: £18,010
• 21 October 2026: £18,020

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 1 October 2027.

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

There were no advisories at the latest test.

Mileage at that test: 16,599 miles, which matches the advertised 16,842 miles.

Advertised mileage is about 33,600 miles lower than the median mileage of a 2020 Audi A3 on AskCar.

Similar cars

30 other 2020 Audi A3 S Line 1.5 petrol manual hatchbacks are for sale at UK dealers, from £11,995 to £17,995, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 18,085 miles. Price: £17,599, £421 less than this car. Dealer: Motorpoint Norwich in Norwich. AskCar page: https://askcar.co.uk/car/audi-a3-2020-b8a82c735389
• 2020 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 21,600 miles. Price: £17,495, £525 less than this car. Dealer: Troops in Leadenham. AskCar page: https://askcar.co.uk/car/audi-a3-2020-5ac343a9c3e4
• 2020 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 23,308 miles. Price: £16,495, £1,525 less than this car. Dealer: MSC Motors in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/audi-a3-2020-4a47c3e92598

• The nearest: 2020 Audi A3 S Line, 1.5 petrol hatchback, grey, 8 miles from this car. Mileage: 34,936 miles. Price: £16,734, £1,286 less than this car. Dealer: Johnsons Suzuki Bilston in Bilston. AskCar page: https://askcar.co.uk/car/audi-a3-2020-7bddd756e106