2018 BMW 3 Series 3.0 335d M Sport

Price: £23,840. Fair price: £804 (3%) over the AskCar estimate of £23,036, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,897 priced BMW 3 Series adverts on AskCar as of 5 November 2026.

AskCar lists 7,194 used BMW 3 Series from 2,714 UK dealerships, as of 5 November 2026.

Overview

  • Make: BMW
  • Model: 3 Series
  • Trim: M Sport
  • Version: 3.0 335d M Sport Auto 4WD Euro 6 (s/s) 4dr (309 bhp)
  • Year: 2018
  • Mileage: 16,000 miles
  • Fuel: Diesel
  • Body: Saloon, 4 doors, 5 seats
  • Engine: 3.0 litres, 309 bhp
  • Gearbox: Automatic
  • Drive: Four-wheel drive
  • Colour: Blue
  • CO2: 145 g/km
  • Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW 3 Series M Sport has covered 16,000 miles, around 56,200 fewer miles than is typical for its age. The dealer is asking £23,840, which is £804 above the AskCar estimate of £23,036. To work out the AskCar estimate, we analyse UK dealer adverts for 6,897 BMW 3 Series cars across different ages and specifications. The asking price is now £1,000 lower than when we first recorded the advert 44 days ago. Our records show an MOT expiry date of 29 September 2026, which has passed. Ask the dealer for an update. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at DR Motors in Leicester. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £804 (3%) over the AskCar estimate of £23,036.

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 6,897 priced BMW 3 Series adverts across different ages and specifications, as of 5 November 2026.

A 2018 BMW 3 Series with the 3.0 diesel engine is typically advertised at £18,200: the median of the 68 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2018 BMW 3 Series has been on sale for at least 44 days.

Price history

AskCar first saw this advert on 22 September 2026 at £24,840. Its asking price is now £23,840, £1,000 less. The latest price cut was seen on 30 October 2026.

Price changes recorded:

  • 22 September 2026: £24,840
  • 7 October 2026: £24,640
  • 11 October 2026: £24,340
  • 30 October 2026: £23,840

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: the latest record we hold ran out on 29 September 2026; ask the dealer for the current MOT.

It has had 5 MOTs. The latest, on 30 September 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 15,295 miles, which matches the advertised 16,000 miles.

Advertised mileage is about 56,200 miles lower than the median mileage of a 2018 BMW 3 Series on AskCar.

Similar cars

9 other 2018 BMW 3 Series M Sport 3.0 diesel automatic saloons are for sale at UK dealers, from £10,790 to £19,000, as of 5 November 2026.

The 3 closest to this car in mileage:

  • 2018 BMW 3 Series M Sport, 3.0 diesel saloon, white. Mileage: 35,965 miles. Price: £18,650, £5,190 less than this car. Dealer: Group 1 Ipswich BMW in Ipswich. AskCar page: https://askcar.co.uk/car/bmw-3-series-2018-3e9cb2973f08
  • 2018 BMW 3 Series M Sport, 3.0 diesel saloon, blue. Mileage: 46,943 miles. Price: £18,990, £4,850 less than this car. Dealer: Brownroyd Motors in Heywood. AskCar page: https://askcar.co.uk/car/bmw-3-series-2018-b609d813017a
  • 2018 BMW 3 Series M Sport, 3.0 diesel saloon, blue. Mileage: 47,712 miles. Price: £19,000, £4,840 less than this car. Dealer: Sytner Warwick BMW in Warwick. AskCar page: https://askcar.co.uk/car/bmw-3-series-2018-4f40b53520be

Browse all BMW 3 Series cars for sale · 2018 BMW 3 Series price guide

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Photos

71 photos of this car are on its AskCar page.

As of 5 November 2026, AskCar lists 595,776 cars and vans from 12,945 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.