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: 42,948 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: Grey
• CO2: 135 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2023 Audi A3 S Line has covered 42,948 miles, around 16,000 more miles than is typical for its age. Priced at £19,500, it is advertised £353 above the AskCar estimate of £19,147. The AskCar estimate uses 6,705 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 1 day ago. We checked its advertised mileage against the government's MOT record, and they match. The seller is Sytner Select Swindon, based in Swindon. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 12 November 2026.

How we estimate prices and check cars

Price

Fair price: £353 (1%) over the AskCar estimate of £19,147.

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 6,705 priced Audi A3 adverts across different ages and specifications, as of 12 November 2026.

A 2023 Audi A3 with the 1.5 petrol engine is typically advertised at £20,500: the median of the 496 for sale on AskCar, as of 12 November 2026.

Time on sale

AskCar first saw this 2023 Audi A3 advertised 1 day ago. About half of 2023 Audi A3 cars are gone from sale within a month of being advertised: 1,113 of the 2,224 first advertised between 12 July 2026 and 9 October 2026.

Price history

AskCar first saw this advert on 11 November 2026 at £19,500. 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 12 November 2026: valid until 9 October 2027.

It has had one MOT, on 5 October 2026, and passed.

Advisories at the latest test: undertrays fitted obscuring some components; items removed from driver's view prior to test.

Mileage at that test: 42,041 miles, which matches the advertised 42,948 miles.

Advertised mileage is about 16,000 miles higher than the median mileage of a 2023 Audi A3 on AskCar.

Similar cars

135 other 2023 Audi A3 S Line 1.5 petrol automatic hatchbacks are for sale at UK dealers, from £17,280 to £24,670, as of 12 November 2026.

The 3 closest to this car in mileage:

• 2023 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 42,554 miles. Price: £20,995, £1,495 more than this car. Dealer: Listers Audi Coventry in Coventry. AskCar page: https://askcar.co.uk/car/audi-a3-2023-86ca2e6bde57
• 2023 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 43,682 miles. Price: £18,680, £820 less than this car. Dealer: Big Motoring World Sheffield in Sheffield. AskCar page: https://askcar.co.uk/car/audi-a3-2023-cffdf8b9b3e7
• 2023 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 42,039 miles. Price: £18,180, £1,320 less than this car. Dealer: Big Motoring World Blue Bell Hill in Blue Bell Hill. AskCar page: https://askcar.co.uk/car/audi-a3-2023-8cf5151cb3a1

• The nearest: 2023 Audi A3 S Line, 1.5 petrol hatchback, grey, under a mile from this car. Mileage: 48,365 miles. Price: £19,300, £200 less than this car. Dealer: Sytner Select Swindon in Swindon. AskCar page: https://askcar.co.uk/car/audi-a3-2023-f2c38ca66585