2018 Audi A3 2.0 TFSI S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 2.0 TFSI S Line S tronic 4WD Euro 6 (s/s) 5dr Sportback (187 bhp)
• Year: 2018
• Mileage: 21,983 miles
• Fuel: Petrol
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (S tronic)
• Drive: Four-wheel drive
• Colour: Black
• CO2: 134 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Audi A3 S Line is advertised with 21,983 miles, approximately 43,000 below the typical mileage for its age. Its asking price of £17,690 is £1,339 below the AskCar estimate of £19,029. The AskCar estimate draws on 6,542 Audi A3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this advert 125 days ago, and its asking price has since fallen by £1,300. Its advertised mileage matches the government's MOT record. The seller is EMG Motor Group Boston Mazda, based in Boston. 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: £1,339 (7%) under the AskCar estimate of £19,029.

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 petrol 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 125 days.

Price history

AskCar first saw this advert on 30 June 2026 at £18,990. Its asking price is now £17,690, £1,300 less. The latest price cut was seen on 28 October 2026.

Price changes recorded:

• 30 June 2026: £18,990
• 13 July 2026: £18,695
• 21 July 2026: £18,795
• 25 July 2026: £18,595
• 31 July 2026: £18,795
• 11 August 2026: £18,610
• 13 August 2026: £18,495
• 20 August 2026: £17,995
• 26 August 2026: £18,195
• 6 September 2026: £17,995
• 12 September 2026: £18,145
• 18 September 2026: £17,995
• 13 October 2026: £17,880
• 20 October 2026: £17,795
• 28 October 2026: £17,690

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 30 May 2027.

It has had 6 MOTs. The latest, on 27 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 21,588 miles, which matches the advertised 21,983 miles.

Advertised mileage is about 43,000 miles lower than the median mileage of a 2018 Audi A3 on AskCar.

Similar cars

2 other 2018 Audi A3 S Line 2.0 petrol automatic hatchbacks are for sale at UK dealers, from £10,395 to £12,989, as of 2 November 2026.

The 2 closest to this car in mileage:

• 2018 Audi A3 S Line, 2.0 petrol hatchback, grey. Mileage: 33,589 miles. Price: £10,395, £7,295 less than this car. Dealer: Top Gear Harrow in Harrow. AskCar page: https://askcar.co.uk/car/audi-a3-2018-a5711716c088
• 2018 Audi A3 S Line, 2.0 petrol hatchback, blue. Mileage: 77,000 miles. Price: £12,989, £4,701 less than this car. Dealer: Emaari Automotive in Croydon. AskCar page: https://askcar.co.uk/car/audi-a3-2018-cf2b4fe72baf