2023 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: 2023
• Mileage: 37,000 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

This 2023 Audi A3 S Line is advertised with 37,000 miles, approximately 10,000 above the typical mileage for its age. Its asking price of £19,690 is £409 below the AskCar estimate of £20,099. The AskCar estimate uses UK dealer asking prices, including 6,542 Audi A3 adverts, and accounts for the car’s age, mileage and specification. It first appeared in our advert records 31 days ago. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at 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: £409 (2%) under the AskCar estimate of £20,099.

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 2023 Audi A3 with the 1.5 petrol engine is typically advertised at £20,600: the median of the 493 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2023 Audi A3 has been on sale for at least 31 days.

Price history

AskCar first saw this advert on 2 October 2026 at £19,690. 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 23 May 2027.

It has had one MOT, on 29 April 2026, and passed.

There were no advisories at the latest test.

Mileage at that test: 31,460 miles, which matches the advertised 37,000 miles.

Advertised mileage is about 10,000 miles higher than the median mileage of a 2023 Audi A3 on AskCar.

Similar cars

128 other 2023 Audi A3 S Line 1.5 petrol automatic hatchbacks are for sale at UK dealers, from £16,195 to £24,670, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2023 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 36,962 miles. Price: £20,000, £310 more than this car. Dealer: Drift Bridge Audi Approved - Epsom in Epsom. AskCar page: https://askcar.co.uk/car/audi-a3-2023-8214e286aaa1
• 2023 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 36,484 miles. Price: £20,470, £780 more than this car. Dealer: Lookers Audi Farnborough in Farnborough. AskCar page: https://askcar.co.uk/car/audi-a3-2023-2d303b6c4dd3
• 2023 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 36,427 miles. Price: £21,498, £1,808 more than this car. Dealer: Arnold Clark in Telford. AskCar page: https://askcar.co.uk/car/audi-a3-2023-268cb34eabd1

• The nearest: 2023 Audi A3 S Line, 1.5 petrol hatchback, blue, 9 miles from this car. Mileage: 18,555 miles. Price: £22,445, £2,755 more than this car. Dealer: Swansway Garages Preston Audi in Preston. AskCar page: https://askcar.co.uk/car/audi-a3-2023-9b9be06b802f