2018 Audi A3 2.0 TDI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 2.0 TDI S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
• Year: 2018
• Mileage: 43,131 miles
• Fuel: Diesel
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 116 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 43,131 miles on the clock, this 2018 Audi A3 S Line has done roughly 21,900 fewer miles than a typical 2018 Audi A3. The dealer is asking £14,850, which is £704 below the AskCar estimate of £15,554. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. It first appeared in our advert records 34 days ago. We checked its advertised mileage against the government's MOT record, and they match. It is advertised by Parkway Motor Group in Edwinstowe. 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: £704 (4%) under the AskCar estimate of £15,554.

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 2.0 diesel engine is typically advertised at £13,500: the median of the 68 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2018 Audi A3 has been on sale for at least 34 days.

Price history

AskCar first saw this advert on 29 September 2026 at £14,850. 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 2 November 2026: valid until 8 June 2027.

It has had 6 MOTs. The latest, on 9 June 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 41,750 miles, which matches the advertised 43,131 miles.

Advertised mileage is about 21,900 miles lower than the median mileage of a 2018 Audi A3 on AskCar.

Similar cars

6 other 2018 Audi A3 S Line 2.0 diesel automatic hatchbacks are for sale at UK dealers, from £9,995 to £16,495, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A3 S Line, 2.0 diesel hatchback, white. Mileage: 27,000 miles. Price: £16,495, £1,645 more than this car. Dealer: Auto 2000 in Havering. AskCar page: https://askcar.co.uk/car/audi-a3-2018-42c719045174
• 2018 Audi A3 S Line, 2.0 diesel hatchback, silver. Mileage: 61,178 miles. Price: £13,899, £951 less than this car. Dealer: Eastern Western Motor Group Car Deal Warehouse Dundee in Dundee. AskCar page: https://askcar.co.uk/car/audi-a3-2018-303e5adec620
• 2018 Audi A3 S Line, 2.0 diesel hatchback, blue. Mileage: 72,000 miles. Price: £11,995, £2,855 less than this car. Dealer: Isaac Motors in Swansea. AskCar page: https://askcar.co.uk/car/audi-a3-2018-aeff9a27baac

• The nearest: 2018 Audi A3 S Line, 2.0 diesel hatchback, silver, under a mile from this car. Mileage: 82,563 miles. Price: £12,450, £2,400 less than this car. Dealer: Parkway Motor Group in Edwinstowe. AskCar page: https://askcar.co.uk/car/audi-a3-2018-3b7469ecee5f