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: 17,341 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

With 17,341 miles on the clock, this 2023 Audi A3 S Line has done roughly 9,500 fewer miles than a typical 2023 Audi A3. Priced at £21,500, it is advertised £1,020 below the AskCar estimate of £22,520. The AskCar estimate draws on 6,691 Audi A3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. It first appeared in our advert records today. Our latest MOT record expired on 5 November 2026. Check the current position with the dealer. We checked its advertised mileage against the government's MOT record, and they match. The seller is Reverie Autos, based in Hatfield. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,020 (4%) under the AskCar estimate of £22,520.

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 6,691 priced Audi A3 adverts across different ages and specifications, as of 7 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 7 November 2026.

Time on sale

AskCar first saw this 2023 Audi A3 advertised today. About half of 2023 Audi A3 cars are gone from sale within a month of being advertised: 1,073 of the 2,115 first advertised between 8 July 2026 and 4 October 2026.

Price history

AskCar first saw this advert on 7 November 2026 at £21,500. 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 7 November 2026: the latest record we hold ran out on 5 November 2026; ask the dealer for the current MOT.

It has had one MOT, on 6 November 2025, and passed.

There were no advisories at the latest test.

Mileage at that test: 15,708 miles, which matches the advertised 17,341 miles.

Advertised mileage is about 9,500 miles lower than the median mileage of a 2023 Audi A3 on AskCar.

Similar cars

40 other 2023 Audi A3 S Line 1.5 petrol automatic saloons are for sale at UK dealers, from £16,290 to £27,898, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2023 Audi A3 S Line, 1.5 petrol saloon, blue. Mileage: 17,287 miles. Price: £21,890, £390 more than this car. Dealer: Group 1 Automotive Lowestoft Audi in Lowestoft. AskCar page: https://askcar.co.uk/car/audi-a3-2023-4e601761ea87
• 2023 Audi A3 S Line, 1.5 petrol saloon, white. Mileage: 17,499 miles. Price: £21,799, £299 more than this car. Dealer: Freewheel Autos in Chorley. AskCar page: https://askcar.co.uk/car/audi-a3-2023-4fe4352c2b9e
• 2023 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 18,423 miles. Price: £22,990, £1,490 more than this car. Dealer: Stratstone Milton Keynes Audi in Milton Keynes. AskCar page: https://askcar.co.uk/car/audi-a3-2023-a2b145b4775d

• The nearest: 2023 Audi A3 S Line, 1.5 petrol saloon, grey, 8 miles from this car. Mileage: 6,666 miles. Price: £23,950, £2,450 more than this car. Dealer: Group 1 Automotive Watford Audi in Watford. AskCar page: https://askcar.co.uk/car/audi-a3-2023-ac94a8a56d11