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: 28,486 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 28,486 miles. Its asking price of £20,859 is £147 below the AskCar estimate of £21,006. The AskCar estimate uses UK dealer asking prices, including 6,542 Audi A3 adverts, and accounts for the car’s age, mileage and specification. This car was first seen in our listings data 12 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Marriott Motor Group Kings Lynn Audi, based in Kings Lynn. 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: £147 (under 1%) under the AskCar estimate of £21,006.

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 12 days.

Price history

AskCar first saw this advert on 21 October 2026 at £20,859. 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 27 March 2027.

It has had one MOT, on 28 March 2026, and passed.

There were no advisories at the latest test.

Mileage at that test: 25,275 miles, which matches the advertised 28,486 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: 28,543 miles. Price: £21,500, £641 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, red. Mileage: 28,374 miles. Price: £20,989, £130 more 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, £364 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, 29 miles from this car. Mileage: 31,725 miles. Price: £19,549, £1,310 less than this car. Dealer: Motorpoint Peterborough in Peterborough. AskCar page: https://askcar.co.uk/car/audi-a3-2023-0c03bcad1b22