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: 40,000 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

This 2023 Audi A3 S Line is advertised with 40,000 miles, approximately 13,000 above the typical mileage for its age. Its asking price of £20,889 is £1,111 above the AskCar estimate of £19,778. The AskCar estimate uses 6,542 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 37 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Lookers Audi Glasgow, based in Glasgow. 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: £1,111 (5%) over the AskCar estimate of £19,778.

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 37 days.

Price history

AskCar first saw this advert on 26 September 2026 at £20,470. Its asking price is now £20,889, £419 more.

Price changes recorded:

• 26 September 2026: £20,470
• 29 September 2026: £20,930
• 5 October 2026: £20,889

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 6 January 2027.

It has had one MOT, on 7 January 2026, and passed.

Advisories at the latest test: nearside rear tyre worn close to legal limit/worn on edge 0.4mm from legal limit. 225/40/18; offside rear tyre worn close to legal limit/worn on edge 0.4mm from legal limit. 225/40/18; coolant below minimum level.

Mileage at that test: 29,918 miles, which matches the advertised 40,000 miles.

Advertised mileage is about 13,000 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: 40,000 miles. Price: £19,995, £894 less than this car. Dealer: Gerald Hallett Landrover in Yeovil. AskCar page: https://askcar.co.uk/car/audi-a3-2023-da8a83b7808c
• 2023 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 39,551 miles. Price: £20,000, £889 less than this car. Dealer: Cotswold Group Select in Tewkesbury. AskCar page: https://askcar.co.uk/car/audi-a3-2023-2c053e336166
• 2023 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 40,979 miles. Price: £20,799, £90 less than this car. Dealer: John Clark Motor Group Aberdeen Audi in Aberdeen. AskCar page: https://askcar.co.uk/car/audi-a3-2023-1117e66acc69

• The nearest: 2023 Audi A3 S Line, 1.5 petrol hatchback, black, 5 miles from this car. Mileage: 35,701 miles. Price: £20,498, £391 less than this car. Dealer: Arnold Clark Linwood Vauxhall / Jeep / Alfa Romeo in Linwood. AskCar page: https://askcar.co.uk/car/audi-a3-2023-403e5d291c66