2018 Audi A3 1.5 TFSI CoD S Line
Price: £12,795. Fair price: £405 (3%) over the AskCar estimate of £12,390, 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: 1.5 TFSI CoD S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
- Year: 2018
- Mileage: 73,800 miles
- Fuel: Petrol
- Body: Hatchback, 5 doors, 5 seats
- Engine: 1.5 litres, 148 bhp
- Gearbox: Automatic (S tronic)
- Drive: Front-wheel drive
- Colour: Grey
- CO2: 114 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2018 Audi A3 S Line is advertised with 73,800 miles, approximately 8,800 above the typical mileage for its age. Its asking price of £12,795 is £405 above the AskCar estimate of £12,390. To work out the AskCar estimate, we analyse UK dealer adverts for 6,542 Audi A3 cars across different ages and specifications. This car was first seen in our listings data 4 days ago. We checked its advertised mileage against the government's MOT record, and they match. The seller is Group 1 Automotive Stansted Audi, based in Bishops Stortford. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 2 November 2026.
Price
Fair price: £405 (3%) over the AskCar estimate of £12,390.
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
AskCar first saw this 2018 Audi A3 advertised 4 days ago. About half of 2018 Audi A3 cars are gone from sale within a month of being advertised: 230 of the 468 first advertised between 10 July 2026 and 29 September 2026.
Price history
AskCar first saw this advert on 29 October 2026 at £12,795. 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 19 February 2027.
It has had 9 MOTs. The latest, on 20 February 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 68,429 miles, which matches the advertised 73,800 miles.
Advertised mileage is about 8,800 miles higher than the median mileage of a 2018 Audi A3 on AskCar.
Similar cars
21 other 2018 Audi A3 S Line 1.5 petrol automatic hatchbacks are for sale at UK dealers, from £9,695 to £15,995, as of 2 November 2026.
The 3 closest to this car in mileage:
- 2018 Audi A3 S Line, 1.5 petrol hatchback, black. Mileage: 71,340 miles. Price: £12,199, £596 less than this car. Dealer: World Cars in Egham. AskCar page: https://askcar.co.uk/car/audi-a3-2018-685211d86742
- 2018 Audi A3 S Line, 1.5 petrol hatchback, black. Mileage: 80,080 miles. Price: £11,200, £1,595 less than this car. Dealer: Surrey Specialist Cars in Guildford. AskCar page: https://askcar.co.uk/car/audi-a3-2018-63a80f0200bd
- 2018 Audi A3 S Line, 1.5 petrol hatchback, grey. Mileage: 65,827 miles. Price: £12,550, £245 less than this car. Dealer: GSC Essex in Havering. AskCar page: https://askcar.co.uk/car/audi-a3-2018-74c3f242c330
Browse all Audi A3 cars for sale · 2018 Audi A3 price guide
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Photos
43 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.