2018 BMW 4 Series 2.0 420i M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 420i M Sport Auto RWD Euro 6 2dr (Professional Media) (181 bhp)
• Year: 2018
• Mileage: 54,866 miles
• Fuel: Petrol
• Body: 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: White
• CO2: 144 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW 4 Series M Sport is advertised with 54,866 miles, approximately 8,200 below the typical mileage for its age. The AskCar estimate for this car is £14,118. It is priced at £14,900, which is £782 above that estimate. The AskCar estimate uses UK dealer asking prices, including 1,805 BMW 4 Series adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 46 days ago. Its asking price has since fallen by £700. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Sytner Select Cardiff, based in Cardiff. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 9 November 2026.

How we estimate prices and check cars

Price

Fair price: £782 (5%) over the AskCar estimate of £14,118.

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 1,805 priced BMW 4 Series adverts across different ages and specifications, as of 9 November 2026.

A 2018 BMW 4 Series with the 2.0 petrol engine is typically advertised at £14,500: the median of the 121 for sale on AskCar, as of 9 November 2026.

Time on sale

This 2018 BMW 4 Series has been on sale for at least 46 days.

Price history

AskCar first saw this advert on 24 September 2026 at £15,600. Its asking price is now £14,900, £700 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 24 September 2026: £15,600
• 31 October 2026: £14,900

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 9 November 2026: valid until 29 March 2027.

It has had 7 MOTs. The latest, on 12 March 2026, passed.

Advisories at the latest test: offside front suspension arm ball joint has slight play back arm.

Mileage at that test: 52,166 miles, which matches the advertised 54,866 miles.

Advertised mileage is about 8,200 miles lower than the median mileage of a 2018 BMW 4 Series on AskCar.