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: 29,239 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 2023 Audi A3 S Line has covered 29,239 miles, around 2,200 more miles than is typical for its age. The AskCar estimate for this car is £20,938. It is priced at £20,999, which is £61 above that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. The dealer may accept less. This car has been on sale for at least 158 days, and its asking price is down £1,000. Its advertised mileage matches the government's MOT record. It is for sale at Motorplus South Wales in Newport. 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: £61 (under 1%) over the AskCar estimate of £20,938.

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

The dealer may accept less. This 2023 Audi A3 has been on sale for at least 158 days, and its asking price has been cut by £1,000. 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 28 May 2026 at £21,999. Its asking price is now £20,999, £1,000 less. The latest price cut was seen on 5 October 2026.

Price changes recorded:

• 29 May 2026: £21,999
• 13 July 2026: £21,799
• 4 August 2026: £21,499
• 5 October 2026: £20,999

Mileage and MOT

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

It has had one MOT, on 10 February 2026, and passed.

There were no advisories at the latest test.

Mileage at that test: 28,408 miles, which matches the advertised 29,239 miles.

Advertised mileage is about 2,200 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: 29,000 miles. Price: £20,495, £504 less than this car. Dealer: Drive: Your Way in Brighouse. AskCar page: https://askcar.co.uk/car/audi-a3-2023-45f9249926ea
• 2023 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 28,543 miles. Price: £21,500, £501 more than this car. Dealer: Marshall Motor Group Canterbury Audi in Canterbury. AskCar page: https://askcar.co.uk/car/audi-a3-2023-ad3db6fb5585
• 2023 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 28,486 miles. Price: £20,859, £140 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

• The nearest: 2023 Audi A3 S Line, 1.5 petrol hatchback, grey, 8 miles from this car. Mileage: 21,601 miles. Price: £21,000, the same price as this car. Dealer: Mon Motors Cardiff Audi in Cardiff. AskCar page: https://askcar.co.uk/car/audi-a3-2023-3ad168346aad