2018 BMW 4 Series

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

£16,995

Fair price: within 8% of the typical £16,602 for this model, age and mileage, drawing on 1,763 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: 41,500 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: Blue
Doors: 2
Driven wheels: Rear Wheel Drive
Engine badge: 420i
Emissions standard: Euro 6

About this car

With 41,500 miles on the clock, this 2018 BMW 4 Series M Sport has done roughly 21,500 fewer miles than a typical 2018 BMW 4 Series. Its asking price of £16,995 is £393 above our estimate of £16,602. To estimate its market asking price, we analyse UK dealer adverts for 1,763 BMW 4 Series cars across different ages and specifications. This car was first seen in our listings data 8 days ago. The seller is Woodman Motor Company, based in Blackpool.

Stock data from 20 October 2026.

How we estimate prices and check cars

Price history

First seen on 13 October 2026, 8 days ago. Advert duration calculated on 21 October 2026.

Recorded asking prices
Date observed	Asking price
13 October 2026	£16,995
20 October 2026	£16,995

Price and mileage comparison

Estimated market asking price: £16,602. The asking price is £393 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 1,763 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 21,500 miles lower than typical for a 2018 BMW 4 Series.

71 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 price	Mileage
£9,599	117,000 miles
£10,299	116,703 miles
£10,500	65,800 miles
£11,295	105,000 miles
£12,488	72,600 miles

These cars have covered 10,000–117,000 miles, compared with 41,500 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

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Dealer

Woodman Motor Company, Blackpool. Across the dealer network: 14 cars for sale.

Dealer postcode: FY4 5HD.