2018 Audi A3 1.0 TFSI S Line

Price: £13,495. Above the going rate: £1,156 (9%) over the AskCar estimate of £12,339, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,542 priced Audi A3 adverts on AskCar as of 2 November 2026.

AskCar lists 6,720 used Audi A3 from 2,302 UK dealerships, as of 2 November 2026.

Overview

  • Make: Audi
  • Model: A3
  • Trim: S Line
  • Version: 1.0 TFSI 30 S Line Manual FWD Euro 6 (s/s) 5dr Sportback (114 bhp)
  • Year: 2018
  • Mileage: 42,764 miles
  • Fuel: Petrol
  • Body: Hatchback, 5 doors, 5 seats
  • Engine: 1.0 litres, 114 bhp
  • Gearbox: Manual
  • Drive: Front-wheel drive
  • Colour: Grey
  • CO2: 118 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Audi A3 S Line is advertised with 42,764 miles, approximately 22,200 below the typical mileage for its age. Its asking price of £13,495 is £1,156 above the AskCar estimate of £12,339. The AskCar estimate uses 6,542 UK dealer adverts for the Audi A3, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 158 days ago. Its asking price has since fallen by £1,155. We checked its advertised mileage against the government's MOT record, and they match. The seller is Harentor Cars, based in St. Albans. 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

Above the going rate: £1,156 (9%) over the AskCar estimate of £12,339.

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 1.0 petrol engine is typically advertised at £11,000: the median of the 65 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2018 Audi A3 has been on sale for at least 158 days.

Price history

AskCar first saw this advert on 28 May 2026 at £14,650. Its asking price is now £13,495, £1,155 less. The latest price cut was seen on 29 October 2026.

Price changes recorded:

  • 28 May 2026: £14,650
  • 28 August 2026: £13,995
  • 29 October 2026: £13,495

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 15 May 2027.

It has had 7 MOTs. The latest, on 16 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 42,809 miles, which matches the advertised 42,764 miles.

Advertised mileage is about 22,200 miles lower than the median mileage of a 2018 Audi A3 on AskCar.

Similar cars

12 other 2018 Audi A3 S Line 1.0 petrol manual hatchbacks are for sale at UK dealers, from £9,495 to £15,100, as of 2 November 2026.

The 3 closest to this car in mileage:

  • 2018 Audi A3 S Line, 1.0 petrol hatchback, black. Mileage: 45,517 miles. Price: £12,600, £895 less than this car. Dealer: 444 Approved Used in Wednesbury. AskCar page: https://askcar.co.uk/car/audi-a3-2018-28020334fe12
  • 2018 Audi A3 S Line, 1.0 petrol hatchback, white. Mileage: 46,034 miles. Price: £11,995, £1,500 less than this car. Dealer: H & M Cars Barnsley in Barnsley. AskCar page: https://askcar.co.uk/car/audi-a3-2018-3447edf6caba
  • 2018 Audi A3 S Line, 1.0 petrol hatchback, white. Mileage: 52,000 miles. Price: £12,250, £1,245 less than this car. Dealer: Brooke MOT Centre BMC Car Sales Group in Norwich. AskCar page: https://askcar.co.uk/car/audi-a3-2018-b45d393f97e0
  • The nearest: 2018 Audi A3 S Line, 1.0 petrol hatchback, black, 42 miles from this car. Mileage: 71,343 miles. Price: £9,995, £3,500 less than this car. Dealer: Sevenoaks Auto Village Sevenoaks AV in Hildenborough. AskCar page: https://askcar.co.uk/car/audi-a3-2018-caf6866f97ed

Browse all Audi A3 cars for sale · 2018 Audi A3 price guide

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Photos

19 photos of this car are on its AskCar page.

As of 2 November 2026, AskCar lists 586,270 cars and vans from 12,920 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.