2018 Audi A3 1.5 TFSI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.5 TFSI S Line S tronic FWD Euro 6 5dr 35 (147 bhp)
• Year: 2018
• Mileage: 51,536 miles
• Fuel: Petrol
• Body: Hatchback, 5 doors, 5 seats
• Engine: 1.5 litres, 147 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: White
• CO2: 147 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 51,536 miles, this 2018 Audi A3 S Line has covered about 13,500 fewer miles than other 2018 Audi A3 cars. Priced at £13,800, it is advertised £109 above the AskCar estimate of £13,691. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. We first saw this car advertised 24 days ago. Its asking price has since fallen by £50. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Evans Halshaw Vauxhall Cardiff, based in Cardiff. 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: £109 (under 1%) over the AskCar estimate of £13,691.

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 2018 Audi A3 with the 1.5 petrol engine is typically advertised at £12,200: the median of the 142 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2018 Audi A3 has been on sale for at least 24 days.

Price history

AskCar first saw this advert on 9 October 2026 at £13,850. Its asking price is now £13,800, £50 less. The latest price cut was seen on 20 October 2026.

Price changes recorded:

• 9 October 2026: £13,850
• 13 October 2026: £13,820
• 20 October 2026: £13,800

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 10 May 2027.

It has had 6 MOTs. The latest, on 11 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 50,324 miles, which matches the advertised 51,536 miles.

Advertised mileage is about 13,500 miles lower than the median mileage of a 2018 Audi A3 on AskCar.

Similar cars

21 other 2018 Audi A3 S Line 1.5 petrol automatic hatchbacks are for sale at UK dealers, from £9,695 to £15,995, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A3 S Line, 1.5 petrol hatchback, black. Mileage: 51,000 miles. Price: £14,191, £391 more than this car. Dealer: Lookers Audi Newcastle in Newcastle upon Tyne. AskCar page: https://askcar.co.uk/car/audi-a3-2018-95a6abb17d20
• 2018 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 50,758 miles. Price: £14,170, £370 more than this car. Dealer: Bluauto in Uckfield. AskCar page: https://askcar.co.uk/car/audi-a3-2018-eb25d48b3b0d
• 2018 Audi A3 S Line, 1.5 petrol hatchback, black. Mileage: 47,320 miles. Price: £13,900, £100 more than this car. Dealer: Sytner Select Cardiff in Cardiff. AskCar page: https://askcar.co.uk/car/audi-a3-2018-ce8e5ed28cb7