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: 25,339 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 is advertised with 25,339 miles on the clock. The dealer is asking £20,977, which is £155 below the AskCar estimate of £21,132. To work out the AskCar estimate, we analyse UK dealer adverts for 6,729 Audi A3 cars across different ages and specifications. This car was first seen in our listings data 6 days ago. The government's MOT record matches its advertised mileage. It is for sale at CarSupermarket.com Hessle in East Riding of Yorkshire. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £155 (under 1%) under the AskCar estimate of £21,132.

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 6,729 priced Audi A3 adverts across different ages and specifications, as of 6 November 2026.

A 2023 Audi A3 with the 1.5 petrol engine is typically advertised at £20,500: the median of the 512 for sale on AskCar, as of 6 November 2026.

Time on sale

AskCar first saw this 2023 Audi A3 advertised 6 days ago. About half of 2023 Audi A3 cars are gone from sale within a month of being advertised: 1,062 of the 2,095 first advertised between 8 July 2026 and 3 October 2026.

Price history

AskCar first saw this advert on 31 October 2026 at £20,977. 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 6 November 2026: valid until 30 October 2027.

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

There were no advisories at the latest test.

Mileage at that test: 25,338 miles, which matches the advertised 25,339 miles.

Advertised mileage is about 1,700 miles lower than the median mileage of a 2023 Audi A3 on AskCar.

Similar cars

139 other 2023 Audi A3 S Line 1.5 petrol automatic hatchbacks are for sale at UK dealers, from £16,930 to £24,670, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2023 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 25,124 miles. Price: £19,899, £1,078 less than this car. Dealer: Thurlow Nunn Great Yarmouth in Great Yarmouth. AskCar page: https://askcar.co.uk/car/audi-a3-2023-c259e0d9dbe3
• 2023 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 25,604 miles. Price: £20,295, £682 less than this car. Dealer: Witham Garage in Melton Mowbray. AskCar page: https://askcar.co.uk/car/audi-a3-2023-0a71b05d2e29
• 2023 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 25,677 miles. Price: £22,500, £1,523 more than this car. Dealer: Sytner Group West London Audi in London. AskCar page: https://askcar.co.uk/car/audi-a3-2023-3c45c10e57f5

• The nearest: 2023 Audi A3 S Line, 1.5 petrol hatchback, grey, under a mile from this car. Mileage: 37,288 miles. Price: £18,477, £2,500 less than this car. Dealer: CarSupermarket.com Hessle in Hessle. AskCar page: https://askcar.co.uk/car/audi-a3-2023-7691f0a37024