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: 28,543 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: Grey
• CO2: 135 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2023 Audi A3 S Line has covered 28,543 miles. The dealer is asking £21,500, which is £499 above the AskCar estimate of £21,001. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. This car was first seen in our listings data 2 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Marshall Motor Group Canterbury Audi, based in Canterbury. 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: £499 (2%) over the AskCar estimate of £21,001.

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

AskCar first saw this 2023 Audi A3 advertised 2 days ago. About half of 2023 Audi A3 cars are gone from sale within a month of being advertised: 963 of the 1,886 first advertised between 8 July 2026 and 29 September 2026.

Price history

AskCar first saw this advert on 31 October 2026 at £21,500. 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 5 September 2027.

It has had one MOT, on 11 August 2026, and passed.

Advisories at the latest test: offside front nail in tyre.

Mileage at that test: 27,209 miles, which matches the advertised 28,543 miles.

Advertised mileage is about 1,500 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: 28,486 miles. Price: £20,859, £641 less than this car. Dealer: Marriott Motor Group Kings Lynn Audi in King's Lynn. AskCar page: https://askcar.co.uk/car/audi-a3-2023-3b22dc1dfb46
• 2023 Audi A3 S Line, 1.5 petrol hatchback, red. Mileage: 28,374 miles. Price: £20,989, £511 less than this car. Dealer: cinch in Royal Tunbridge Wells. AskCar page: https://askcar.co.uk/car/audi-a3-2023-cbf5f7639be2
• 2023 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 29,000 miles. Price: £20,495, £1,005 less than this car. Dealer: Drive: Your Way in Brighouse. AskCar page: https://askcar.co.uk/car/audi-a3-2023-45f9249926ea

• The nearest: 2023 Audi A3 S Line, 1.5 petrol hatchback, blue, 25 miles from this car. Mileage: 30,509 miles. Price: £22,990, £1,490 more than this car. Dealer: Marshall Motor Group Maidstone Audi in Maidstone. AskCar page: https://askcar.co.uk/car/audi-a3-2023-cd7c89c29d27