2018 BMW 4 Series Gran Coupe 2.0 420d M Sport

Overview

• Make: BMW
• Model: 4 Series Gran Coupe
• Trim: M Sport
• Version: 2.0 420d M Sport Auto RWD Euro 6 (s/s) 5dr (187 bhp)
• Year: 2018
• Mileage: 50,500 miles
• Fuel: Diesel
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 126 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 50,500 miles, this 2018 BMW 4 Series Gran Coupe M Sport has covered about 23,200 fewer miles than other 2018 BMW 4 Series Gran Coupe cars. The AskCar estimate for this car is £16,444. It is priced at £15,890, which is £554 below that estimate. The AskCar estimate uses UK dealer asking prices, including 1,174 BMW 4 Series Gran Coupe adverts, and accounts for the car’s age, mileage and specification. We first recorded this car for sale 10 days ago. The latest recorded MOT expiry date is 28 September 2026, which has passed. Confirm its status with the dealer. The government's MOT record matches its advertised mileage. You can find this car at Bellevue Garage in Dunstable. 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: £554 (3%) under the AskCar estimate of £16,444.

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 1,174 priced BMW 4 Series Gran Coupe adverts across different ages and specifications, as of 7 November 2026.

A 2018 BMW 4 Series Gran Coupe with the 2.0 diesel engine is typically advertised at £13,500: the median of the 123 for sale on AskCar, as of 7 November 2026.

Time on sale

This 2018 BMW 4 Series Gran Coupe has been on sale for at least 10 days.

Price history

AskCar first saw this advert on 28 October 2026 at £15,890. 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: the latest record we hold ran out on 28 September 2026; ask the dealer for the current MOT.

It failed its MOT on 24 September 2025 (nearside rear tyre has ply or cords exposed) and passed 2 days later, on 26 September 2025.

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: 46,228 miles, which matches the advertised 50,500 miles.

Advertised mileage is about 23,200 miles lower than the median mileage of a 2018 BMW 4 Series Gran Coupe on AskCar.

Similar cars

46 other 2018 BMW 4 Series Gran Coupe M Sport 2.0 diesel automatic hatchbacks are for sale at UK dealers, from £7,995 to £19,990, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW 4 Series Gran Coupe M Sport, 2.0 diesel hatchback, silver. Mileage: 51,714 miles. Price: £16,491, £601 more than this car. Dealer: Your Next Car in Nottingham. AskCar page: https://askcar.co.uk/car/bmw-4-series-gran-coupe-2018-d8c75bb4e44f
• 2018 BMW 4 Series Gran Coupe M Sport, 2.0 diesel hatchback, white. Mileage: 49,000 miles. Price: £15,975, £85 more than this car. Dealer: Nick King Car Sales in Gloucester. AskCar page: https://askcar.co.uk/car/bmw-4-series-gran-coupe-2018-e0bf07bfd7c2
• 2018 BMW 4 Series Gran Coupe M Sport, 2.0 diesel hatchback, black. Mileage: 48,000 miles. Price: £15,490, £400 less than this car. Dealer: Monarch Motor Company in Redditch. AskCar page: https://askcar.co.uk/car/bmw-4-series-gran-coupe-2018-56faf49d6e9c

• The nearest: 2018 BMW 4 Series Gran Coupe M Sport, 2.0 diesel hatchback, black, under a mile from this car. Mileage: 108,200 miles. Price: £11,547, £4,343 less than this car. Dealer: IM Car Supermarket in Dunstable. AskCar page: https://askcar.co.uk/car/bmw-4-series-gran-coupe-2018-2d8257528be5