2018 Audi A3 1.5 TFSI CoD S Line

Overview

• Make: Audi
• Model: A3
• Trim: S Line
• Version: 1.5 TFSI CoD S Line S tronic FWD Euro 6 (s/s) 4dr (148 bhp)
• Year: 2018
• Mileage: 41,310 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 1.5 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 113 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Audi A3 S Line is advertised with 41,310 miles on the clock. Its asking price of £16,250 is £921 above the AskCar estimate of £15,329. To work out the AskCar estimate, we analyse UK dealer adverts for 6,630 Audi A3 cars across different ages and specifications. We have tracked this advert for 3 days. The latest MOT recorded 41,984 miles, above the advertised mileage. Check this with the dealer. Its recorded MOT is valid until 25 September 2027. It is for sale at The Professional Car Agents in Plymouth. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £921 (6%) over the AskCar estimate of £15,329.

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 6,630 priced Audi A3 adverts across different ages and specifications, as of 4 November 2026.

A 2018 Audi A3 with the 1.5 petrol engine is typically advertised at £12,100: the median of the 138 for sale on AskCar, as of 4 November 2026.

Time on sale

AskCar first saw this 2018 Audi A3 advertised 3 days ago. About half of 2018 Audi A3 cars are gone from sale within a month of being advertised: 244 of the 490 first advertised between 10 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 1 November 2026 at £16,250. 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 4 November 2026: valid until 25 September 2027.

It has had 6 MOTs. The latest, on 24 September 2026, passed.

Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge; offside front tyre worn close to legal limit/worn on edge.

Mileage at that test: 41,984 miles. The advert says 41,310 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 23,700 miles lower than the median mileage of a 2018 Audi A3 on AskCar.

Similar cars

4 other 2018 Audi A3 S Line 1.5 petrol automatic saloons are for sale at UK dealers, from £10,295 to £15,250, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 44,167 miles. Price: £15,250, £1,000 less than this car. Dealer: Sytner Group West London Audi in London. AskCar page: https://askcar.co.uk/car/audi-a3-2018-834629521ef4
• 2018 Audi A3 S Line, 1.5 petrol saloon, grey. Mileage: 75,750 miles. Price: £13,490, £2,760 less than this car. Dealer: Quattro Tech Cars in St Ives. AskCar page: https://askcar.co.uk/car/audi-a3-2018-eb1b0a39c735
• 2018 Audi A3 S Line, 1.5 petrol saloon, black. Mileage: 89,508 miles. Price: £10,295, £5,955 less than this car. Dealer: Kestrels Motor Company in Halstead. AskCar page: https://askcar.co.uk/car/audi-a3-2018-c98fde75305b