2018 BMW 4 Series

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

£14,689

Good value: £1,752 under the typical £16,441 for this model, age and mileage, drawing on 1,749 adverts of this make and model.

Overview

Make
BMW
Model
4 Series
Trim
M SPORT
Version
2.0 420i M Sport Auto RWD Euro 6 (s/s) 2dr (181 bhp)
Mileage
43,000 miles
Year
2018
Fuel type
Petrol
Body type
Convertible
Engine
2.0 L
Gearbox
Automatic
Power
181 bhp
Seats
4
CO2
144 g/km
Colour
White
Doors
2
Driven wheels
Rear Wheel Drive
Engine badge
420i
Emissions standard
Euro 6

About this car

With 43,000 miles on the clock, this 2018 BMW 4 Series M Sport has done roughly 20,000 fewer miles than a typical 2018 BMW 4 Series. At £14,689, it is advertised £1,752 below our estimated market asking price of £16,441. Our estimate draws on 1,749 BMW 4 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. Since we first spotted the advert 52 days ago, the asking price has dropped by £800. MOT records show an expiry date of 12 July 2027, and the latest recorded mileage is consistent with the advert. It is for sale at Berengrave Services in Gillingham.

Stock data from 21 October 2026.

How we estimate prices and check cars

Price history

First seen on 31 August 2026, 52 days ago. Advert duration calculated on 22 October 2026. Net asking-price reduction: £800 from the first recorded £15,489. 3 price reductions recorded, the latest observed on 24 September 2026.

Recorded asking prices
Date observedAsking price
31 August 2026£15,489
12 September 2026£14,989
18 September 2026£14,689
24 September 2026£14,389
4 October 2026£14,689
21 October 2026£14,689

Price and mileage comparison

Estimated market asking price: £16,441. The asking price is £1,752 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 1,749 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 20,000 miles lower than typical for a 2018 BMW 4 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 12 July 2027. 43,271 miles at the last test.

69 other cars with the same year, trim, gearbox and fuel are for sale from £9,599 to £28,750.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£9,599117,000 miles
£10,299116,703 miles
£10,50065,800 miles
£11,295105,000 miles
£12,48872,600 miles

These cars have covered 10,000–117,000 miles, compared with 43,000 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. Our estimate adjusts for these differences using the wider market data.

Browse all BMW 4 Series cars for sale · 2018 BMW 4 Series price guide

How to contact the dealer, its opening hours and the cheaper cars like this one are on this AskCar page.

Vehicle photos