2018 Audi A3 1.5 TFSI CoD S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.5 TFSI CoD 35 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
• Year: 2018
• Mileage: 29,000 miles
• Fuel: Petrol
• Body: Hatchback, 5 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 117 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 29,000 miles on the clock, this 2018 Audi A3 S Line has done roughly 35,600 fewer miles than a typical 2018 Audi A3. The AskCar estimate for this car is £15,521. It is priced at £14,990, which is £531 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 6,691 Audi A3 cars across different ages and specifications. We first recorded this car for sale 2 days ago. Its advertised mileage matches the government's MOT record. It is for sale at Mondial Cars in Northwood. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £531 (3%) under the AskCar estimate of £15,521.

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 6,691 priced Audi A3 adverts across different ages and specifications, as of 7 November 2026.

A 2018 Audi A3 with the 1.5 petrol engine is typically advertised at £12,400: the median of the 144 for sale on AskCar, as of 7 November 2026.

Time on sale

AskCar first saw this 2018 Audi A3 advertised 2 days ago. About half of 2018 Audi A3 cars are gone from sale within a month of being advertised: 252 of the 502 first advertised between 10 July 2026 and 4 October 2026.

Price history

AskCar first saw this advert on 5 November 2026 at £14,990. 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 7 November 2026: valid until 5 June 2027.

It has had 6 MOTs. The latest, on 14 May 2026, passed.

Advisories at the latest test: nearside rear nail in tyre.

Mileage at that test: 27,448 miles, which matches the advertised 29,000 miles.

Advertised mileage is about 35,600 miles lower than the median mileage of a 2018 Audi A3 on AskCar.

Similar cars

20 other 2018 Audi A3 S Line 1.5 petrol automatic hatchbacks are for sale at UK dealers, from £9,695 to £15,985, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A3 S Line, 1.5 petrol hatchback, blue. Mileage: 31,603 miles. Price: £15,550, £560 more than this car. Dealer: Stratstone Amersham Audi in Amersham. AskCar page: https://askcar.co.uk/car/audi-a3-2018-91b5052f6576
• 2018 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 32,600 miles. Price: £15,985, £995 more than this car. Dealer: Michael Birks Specialist Cars in Sheffield. AskCar page: https://askcar.co.uk/car/audi-a3-2018-36264a2ac2d0
• 2018 Audi A3 S Line, 1.5 petrol hatchback, white. Mileage: 34,079 miles. Price: £15,950, £960 more than this car. Dealer: Jones Motor Company in Chester. AskCar page: https://askcar.co.uk/car/audi-a3-2018-3c33716dc7d4