2015 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
• Year: 2015
• Mileage: 114,000 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 131 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 114,000 miles on the clock, this 2015 BMW 4 Series M Sport has done roughly 31,900 more miles than a typical 2015 BMW 4 Series. The dealer is asking £8,450, which is £61 below the AskCar estimate of £8,511. To work out the AskCar estimate, we analyse UK dealer adverts for 1,814 BMW 4 Series cars across different ages and specifications. Since we first spotted the advert 160 days ago, the asking price has dropped by £840. The government's MOT record matches its advertised mileage. You can find this car at West Brook Car Sales in Peterborough. 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: £61 (under 1%) under the AskCar estimate of £8,511.

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 1,814 priced BMW 4 Series adverts across different ages and specifications, as of 4 November 2026.

A 2015 BMW 4 Series with the 2.0 diesel engine is typically advertised at £10,000: the median of the 103 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2015 BMW 4 Series has been on sale for at least 160 days.

Price history

AskCar first saw this advert on 28 May 2026 at £9,290. Its asking price is now £8,450, £840 less. The latest price cut was seen on 1 November 2026.

Price changes recorded:

• 28 May 2026: £9,290
• 20 June 2026: £9,250
• 27 July 2026: £8,990
• 6 August 2026: £8,890
• 15 October 2026: £8,650
• 1 November 2026: £8,450

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 21 April 2027.

It has had 10 MOTs. The latest, on 8 April 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 114,170 miles, which matches the advertised 114,000 miles.

Advertised mileage is about 31,900 miles higher than the median mileage of a 2015 BMW 4 Series on AskCar.

Similar cars

17 other 2015 BMW 4 Series M Sport 2.0 diesel automatic convertibles are for sale at UK dealers, from £7,450 to £14,252, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2015 BMW 4 Series M Sport, 2.0 diesel convertible, blue. Mileage: 109,708 miles. Price: £8,799, £349 more than this car. Dealer: Automania Specialist Cars in West Bromwich. AskCar page: https://askcar.co.uk/car/bmw-4-series-2015-68f49d9468b6
• 2015 BMW 4 Series M Sport, 2.0 diesel convertible, blue. Mileage: 119,069 miles. Price: £8,250, £200 less than this car. Dealer: Essex Select Cars in Great Bentley. AskCar page: https://askcar.co.uk/car/bmw-4-series-2015-cc834c245660
• 2015 BMW 4 Series M Sport, 2.0 diesel convertible, white. Mileage: 122,000 miles. Price: £7,598, £852 less than this car. Dealer: P A Roberts The BMW Specialist in Whitchurch. AskCar page: https://askcar.co.uk/car/bmw-4-series-2015-da26e8096426

• The nearest: 2015 BMW 4 Series M Sport, 2.0 diesel convertible, blue, 2 miles from this car. Mileage: 82,004 miles. Price: £11,490, £3,040 more than this car. Dealer: Elton Cars in Peterborough. AskCar page: https://askcar.co.uk/car/bmw-4-series-2015-15f58e8d3054