2018 BMW 4 Series Gran Coupe 2.0 420i M Sport

Overview

• Make: BMW
• Model: 4 Series Gran Coupe
• Trim: M Sport
• Version: 2.0 420i M Sport Auto RWD Euro 6 (s/s) 5dr (181 bhp)
• Year: 2018
• Mileage: 82,312 miles
• Fuel: Petrol
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 134 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 82,312 miles, this 2018 BMW 4 Series Gran Coupe M Sport has covered about 8,700 more miles than other 2018 BMW 4 Series Gran Coupe cars. This car is priced at £8,795, £3,639 below the AskCar estimate of £12,434. Such a large price gap is worth checking with the dealer. The AskCar estimate draws on 1,174 BMW 4 Series Gran Coupe adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this car for sale 1 day ago. Its advertised mileage matches the government's MOT record. The seller is Top Gear Harrow, based in Harrow. 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

Far below the going rate: £3,639 (29%) under the AskCar estimate of £12,434. Worth asking the dealer why.

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 petrol engine is typically advertised at £13,500: the median of the 123 for sale on AskCar, as of 7 November 2026.

Time on sale

AskCar first saw this 2018 BMW 4 Series Gran Coupe advertised 1 day ago. About 4 in 10 of 2018 BMW 4 Series Gran Coupe cars are gone from sale within a month of being advertised: 78 of the 193 first advertised between 14 July 2026 and 4 October 2026.

Price history

AskCar first saw this advert on 6 November 2026 at £8,795. 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 7 November 2026: valid until 23 February 2027.

It failed its MOT on 19 February 2026 (nearside front road wheel fractured cracked through welded repair) and passed 2 days later, on 21 February 2026.

There were no advisories at the latest test.

Mileage at that test: 73,229 miles, which matches the advertised 82,312 miles.

Advertised mileage is about 8,700 miles higher than the median mileage of a 2018 BMW 4 Series Gran Coupe on AskCar.

Similar cars

36 other 2018 BMW 4 Series Gran Coupe M Sport 2.0 petrol automatic hatchbacks are for sale at UK dealers, from £8,990 to £17,995, as of 7 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW 4 Series Gran Coupe M Sport, 2.0 petrol hatchback, blue. Mileage: 83,000 miles. Price: £13,495, £4,700 more than this car. Dealer: Westgrove Cars in West Byfleet and Sheerwater New Haw. AskCar page: https://askcar.co.uk/car/bmw-4-series-gran-coupe-2018-c4606a64956b
• 2018 BMW 4 Series Gran Coupe M Sport, 2.0 petrol hatchback, white. Mileage: 79,500 miles. Price: £11,995, £3,200 more than this car. Dealer: Ingatestone Motors in Ingatestone. AskCar page: https://askcar.co.uk/car/bmw-4-series-gran-coupe-2018-b5fde2002af8
• 2018 BMW 4 Series Gran Coupe M Sport, 2.0 petrol hatchback, white. Mileage: 77,754 miles. Price: £12,995, £4,200 more than this car. Dealer: Moss Prestige in Huddersfield. AskCar page: https://askcar.co.uk/car/bmw-4-series-gran-coupe-2018-50c244d276e1

• The nearest: 2018 BMW 4 Series Gran Coupe M Sport, 2.0 petrol hatchback, blue, 7 miles from this car. Mileage: 60,000 miles. Price: £15,649, £6,854 more than this car. Dealer: Bushey Car Sales in Radlett. AskCar page: https://askcar.co.uk/car/bmw-4-series-gran-coupe-2018-02b44311bd04