2018 BMW 4 Series

Overview

Make

BMW

Model

4 Series

Trim

M SPORT

Version

2.0 420i M Sport Manual RWD Euro 6 (s/s) 2dr (181 bhp)

Mileage

28,885 miles

Year

2018

Fuel type

Petrol

Body type

Convertible

Engine

2.0 L

Gearbox

Manual

Power

181 bhp

Seats

4

CO2

153 g/km

Colour

White

Doors

2

Driven wheels

Rear Wheel Drive

Engine badge

420i

Emissions standard

Euro 6

About this car

With 28,885 miles on the clock, this 2018 BMW 4 Series M Sport has done roughly 34,700 fewer miles than a typical 2018 BMW 4 Series. At £15,500, it is advertised £1,360 below our estimated market asking price of £16,860. We use UK dealer asking prices, including 1,756 BMW 4 Series listings, and account for the car’s age, mileage and specification. It first appeared in our advert records 14 days ago. MOT records show an expiry date of 18 March 2027, and the latest recorded mileage is consistent with the advert. It is for sale at Car Planet Watford in Rickmansworth.

Stock data from 19 October 2026.

How we estimate prices and check cars

Price and mileage comparison

Estimated market asking price: £16,860. The asking price is £1,360 below this estimate.

The estimate uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It estimates an advertised price, not a confirmed sale price.

The pricing calculation includes 1,756 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 34,700 miles lower than typical for a 2018 BMW 4 Series.

The advertised mileage is consistent with the last MOT reading.