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: 37,861 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: Blue
• CO2: 135 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 37,861 miles on the clock, this 2023 Audi A3 S Line has done roughly 10,900 more miles than a typical 2023 Audi A3. Priced at £20,000, it is advertised £7 below the AskCar estimate of £20,007. The AskCar estimate uses 6,542 UK dealer adverts for the Audi A3, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 50 days ago. Its asking price has since fallen by £1,000. We checked its advertised mileage against the government's MOT record, and they match. The seller is Sytner Group Audi Reading, based in Reading. 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: £7 (under 1%) under the AskCar estimate of £20,007.

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 50 days.

Price history

AskCar first saw this advert on 13 September 2026 at £21,000. Its asking price is now £20,000, £1,000 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 13 September 2026: £21,000
• 21 October 2026: £20,500
• 27 October 2026: £20,000

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 19 January 2027.

It has had one MOT, on 16 January 2026, and passed.

There were no advisories at the latest test.

Mileage at that test: 31,094 miles, which matches the advertised 37,861 miles.

Advertised mileage is about 10,900 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, blue. Mileage: 38,672 miles. Price: £19,891, £109 less than this car. Dealer: Lookers Audi Newcastle in Newcastle upon Tyne. AskCar page: https://askcar.co.uk/car/audi-a3-2023-a4619a4df278
• 2023 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 37,000 miles. Price: £19,690, £310 less than this car. Dealer: GTS Automotive in Osbaldeston. AskCar page: https://askcar.co.uk/car/audi-a3-2023-7420a0b5019f
• 2023 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 36,962 miles. Price: £20,000, the same price as this car. Dealer: Drift Bridge Audi Approved - Epsom in Epsom. AskCar page: https://askcar.co.uk/car/audi-a3-2023-8214e286aaa1

• The nearest: 2023 Audi A3 S Line, 1.5 petrol hatchback, black, under a mile from this car. Mileage: 22,221 miles. Price: £23,750, £3,750 more than this car. Dealer: Sytner Group Audi Reading in Reading. AskCar page: https://askcar.co.uk/car/audi-a3-2023-aa82c1f633fb