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) 4dr (148 bhp)
• Year: 2023
• Mileage: 32,654 miles
• Fuel: Petrol, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Blue
• CO2: 131 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2023 Audi A3 S Line is advertised with 32,654 miles, approximately 5,700 above the typical mileage for its age. Its asking price of £20,800 is £311 below the AskCar estimate of £21,111. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. Since we first spotted the advert 12 days ago, the asking price has dropped by £200. 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 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £311 (1%) under the AskCar estimate of £21,111.

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 £21,000. Its asking price is now £20,800, £200 less. The latest price cut was seen on 30 October 2026.

Price changes recorded:

• 21 October 2026: £21,000
• 28 October 2026: £20,900
• 30 October 2026: £20,800

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 22 January 2027.

It has had 2 MOTs. The latest, on 21 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 32,657 miles, which matches the advertised 32,654 miles.

Advertised mileage is about 5,700 miles higher than the median mileage of a 2023 Audi A3 on AskCar.

Similar cars

41 other 2023 Audi A3 S Line 1.5 petrol automatic saloons are for sale at UK dealers, from £16,290 to £24,499, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2023 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 34,709 miles. Price: £21,500, £700 more than this car. Dealer: R W Sports And Prestige in Manchester. AskCar page: https://askcar.co.uk/car/audi-a3-2023-af69c9a5fc2c
• 2023 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 34,762 miles. Price: £21,295, £495 more than this car. Dealer: Yeomans Audi Truro in Truro. AskCar page: https://askcar.co.uk/car/audi-a3-2023-ae7a71fafc4f
• 2023 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 35,857 miles. Price: £19,990, £810 less than this car. Dealer: Barlow Motors Stoke Cupra in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/audi-a3-2023-ce3d72415250

• The nearest: 2023 Audi A3 S Line, 1.5 petrol saloon, grey, 16 miles from this car. Mileage: 41,330 miles. Price: £19,818, £982 less than this car. Dealer: Trust Ford Edgware in Edgware. AskCar page: https://askcar.co.uk/car/audi-a3-2023-655a6421b0e3