2018 Audi A3 1.5 S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.5 S Line Auto 4dr (148 bhp)
• Year: 2018
• Mileage: 68,739 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Automatic
• Colour: Silver

About this car

This 2018 Audi A3 S Line is advertised with 68,739 miles, approximately 3,700 above the typical mileage for its age. The dealer is asking £12,299, which is £478 below the AskCar estimate of £12,777. 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 51 days ago. Its asking price has since fallen by £1,100. The seller is Perfect Car Company, based in Shrewsbury. 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: £478 (3%) under the AskCar estimate of £12,777.

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 51 days.

Price history

AskCar first saw this advert on 12 September 2026 at £13,399. Its asking price is now £12,299, £1,100 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 12 September 2026: £13,399
• 16 September 2026: £13,335
• 20 September 2026: £13,299
• 22 September 2026: £13,250
• 3 October 2026: £13,199
• 11 October 2026: £12,995
• 14 October 2026: £12,975
• 15 October 2026: £12,950
• 16 October 2026: £12,699
• 20 October 2026: £12,599
• 22 October 2026: £12,450
• 24 October 2026: £12,399
• 27 October 2026: £12,299

Mileage and MOT

Advertised mileage is about 3,700 miles higher than the median mileage of a 2018 Audi A3 on AskCar.

Similar cars

5 other 2018 Audi A3 S Line 1.5 petrol automatic saloons are for sale at UK dealers, from £10,350 to £16,250, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 75,750 miles. Price: £13,490, £1,191 more than this car. Dealer: Quattro Tech Cars in St Ives. AskCar page: https://askcar.co.uk/car/audi-a3-2018-eb1b0a39c735
• 2018 Audi A3 S Line, 1.5 petrol saloon, black. Mileage: 89,508 miles. Price: £10,495, £1,804 less than this car. Dealer: Kestrels Motor Company in Halstead. AskCar page: https://askcar.co.uk/car/audi-a3-2018-c98fde75305b
• 2018 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 44,167 miles. Price: £15,250, £2,951 more than this car. Dealer: Sytner Group West London Audi in London. AskCar page: https://askcar.co.uk/car/audi-a3-2018-834629521ef4