2018 BMW 4 Series 2.0 420d M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 420d M Sport Auto RWD Euro 6 (s/s) 2dr (187 bhp)
• Year: 2018
• Mileage: 79,729 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Red
• CO2: 124 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW 4 Series M Sport is advertised with 79,729 miles, approximately 16,700 above the typical mileage for its age. Priced at £13,500, it is advertised £766 above the AskCar estimate of £12,734. The AskCar estimate uses 1,822 UK dealer adverts for the BMW 4 Series, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this car for sale 1 day ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is M.m.r Motor Group, based in Newcastle Upon Tyne. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 12 November 2026.

How we estimate prices and check cars

Price

Fair price: £766 (6%) over the AskCar estimate of £12,734.

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 1,822 priced BMW 4 Series adverts across different ages and specifications, as of 12 November 2026.

A 2018 BMW 4 Series with the 2.0 diesel engine is typically advertised at £14,500: the median of the 126 for sale on AskCar, as of 12 November 2026.

Time on sale

AskCar first saw this 2018 BMW 4 Series advertised 1 day ago. About 4 in 10 of 2018 BMW 4 Series cars are gone from sale within a month of being advertised: 139 of the 310 first advertised between 12 July 2026 and 9 October 2026.

Price history

AskCar first saw this advert on 11 November 2026 at £13,500. 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 12 November 2026: valid until 29 April 2027.

It has had 7 MOTs. The latest, on 14 April 2026, passed.

Advisories at the latest test: front brakes imbalanced requirements only just met. it would appear that the braking system requires adjustment or repair.

Mileage at that test: 75,531 miles, which matches the advertised 79,729 miles.

Advertised mileage is about 16,700 miles higher than the median mileage of a 2018 BMW 4 Series on AskCar.

Similar cars

14 other 2018 BMW 4 Series M Sport 2.0 diesel automatic convertibles are for sale at UK dealers, from £13,490 to £17,995, as of 12 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW 4 Series M Sport, 2.0 diesel convertible, blue. Mileage: 67,456 miles. Price: £14,995, £1,495 more than this car. Dealer: KTS Motor Company in Mold. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-55128a60e67a
• 2018 BMW 4 Series M Sport, 2.0 diesel convertible, black. Mileage: 63,918 miles. Price: £13,490, the same price as this car. Dealer: Driven Car Sales in Stockton-on-Tees. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-b0f30e957646
• 2018 BMW 4 Series M Sport, 2.0 diesel convertible, black. Mileage: 60,154 miles. Price: £14,999, £1,499 more than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-c4b7bd9be6b5

• The nearest: 2018 BMW 4 Series M Sport, 2.0 diesel convertible, white, 7 miles from this car. Mileage: 29,068 miles. Price: £16,994, £3,494 more than this car. Dealer: Lookers Car Hub South Shields in South Shields. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-0858ccb93e95