2018 BMW 4 Series

2.0 420i M Sport Auto RWD Euro 6 2dr (Professional Media) (181 bhp)

£16,420

Fair price: within 8% of the typical £16,303 for this model, age and mileage, drawing on 1,758 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 2dr (Professional Media) (181 bhp)
Mileage
31,349 miles
Year
2018
Fuel type
Petrol
Body type
Convertible
Engine
2.0 L
Gearbox
Automatic
Power
181 bhp
Seats
4
CO2
181 g/km
Colour
Black
Doors
2
Driven wheels
Rear Wheel Drive
Engine badge
420i
Emissions standard
Euro 6

About this car

At 31,349 miles, this 2018 BMW 4 Series M Sport has covered about 31,200 fewer miles than other 2018 BMW 4 Series cars. Our estimated market asking price is £16,303. This car is advertised at £16,420, which is £117 above that figure. To estimate its market asking price, we analyse UK dealer adverts for 1,758 BMW 4 Series cars across different ages and specifications. We first recorded this advert 4 days ago, and its asking price has since fallen by £5. Its MOT is recorded as valid until 24 May 2027. The advertised mileage is consistent with the latest MOT reading. You can find this car at Evans Halshaw Hyundai Milton Keynes in Newport Pagnell.

Stock data from 22 October 2026.

How we estimate prices and check cars

Price history

First seen on 19 October 2026, 4 days ago. Advert duration calculated on 23 October 2026. Net asking-price reduction: £5 from the first recorded £16,425. 1 price reduction recorded, the latest observed on 20 October 2026.

Recorded asking prices
Date observedAsking price
19 October 2026£16,425
20 October 2026£16,420
22 October 2026£16,420

Price and mileage comparison

Estimated market asking price: £16,303. The asking price is £117 above 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 1,758 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 31,200 miles lower than typical for a 2018 BMW 4 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 24 May 2027. 28,224 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 31,349 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

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