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: 21,195 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 is advertised with 21,195 miles, approximately 5,800 below the typical mileage for its age. Priced at £22,000, it is advertised £492 above the AskCar estimate of £21,508. The AskCar estimate uses 6,729 UK dealer adverts for the Audi A3, with adjustments for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 3 days ago. Its advertised mileage matches the government's MOT record. The seller is Marshall Motor Group Audi South East London (Beckenham), based in Beckenham. 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: £492 (2%) over the AskCar estimate of £21,508.

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 3 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 3 November 2026 at £21,900. Its asking price is now £22,000, £100 more.

Price changes recorded:

• 3 November 2026: £21,900
• 6 November 2026: £22,000

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 21 March 2027.

It has had one MOT, on 20 March 2026, and passed.

There were no advisories at the latest test.

Mileage at that test: 19,675 miles, which matches the advertised 21,195 miles.

Advertised mileage is about 5,800 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, grey. Mileage: 21,179 miles. Price: £20,795, £1,205 less than this car. Dealer: Witham Garage in Melton Mowbray. AskCar page: https://askcar.co.uk/car/audi-a3-2023-25e94a91a42c
• 2023 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 21,500 miles. Price: £21,300, £700 less than this car. Dealer: Stratstone Amersham Audi in Amersham. AskCar page: https://askcar.co.uk/car/audi-a3-2023-c69fdc066d06
• 2023 Audi A3 S Line, 1.5 petrol hatchback, white. Mileage: 21,542 miles. Price: £20,999, £1,001 less than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/audi-a3-2023-85b6a27a3db4

• The nearest: 2023 Audi A3 S Line, 1.5 petrol hatchback, white, 6 miles from this car. Mileage: 10,074 miles. Price: £20,830, £1,170 less than this car. Dealer: Big Motoring World Wimbledon in Wimbledon. AskCar page: https://askcar.co.uk/car/audi-a3-2023-8ba35e3ccacd