2018 BMW 4 Series

2.0 420d M Sport Auto RWD Euro 6 (s/s) 2dr (187 bhp)

£17,295

Fair price: within 8% of the typical £17,592 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 420d M Sport Auto RWD Euro 6 (s/s) 2dr (187 bhp)
Mileage: 33,856 miles
Year: 2018
Fuel type: Diesel
Body type: Convertible
Engine: 2.0 L
Gearbox: Automatic
Power: 187 bhp
Seats: 4
CO2: 124 g/km
Colour: Blue
Doors: 2
Driven wheels: Rear Wheel Drive
Engine badge: 420d
Emissions standard: Euro 6

About this car

At 33,856 miles, this 2018 BMW 4 Series M Sport has covered about 29,100 fewer miles than other 2018 BMW 4 Series cars. The dealer is asking £17,295, which is £297 below our market estimate of £17,592. To estimate its market asking price, we analyse UK dealer adverts for 1,749 BMW 4 Series cars across different ages and specifications. This car was first seen in our listings data 5 days ago. MOT records show an expiry date of 26 June 2027, and the latest recorded mileage is consistent with the advert. The seller is Sycamore Stamford, based in Stamford.

Stock data from 21 October 2026.

How we estimate prices and check cars

Price history

First seen on 17 October 2026, 5 days ago. Advert duration calculated on 22 October 2026.

Recorded asking prices
Date observed	Asking price
17 October 2026	£17,295
21 October 2026	£17,295

Price and mileage comparison

Estimated market asking price: £17,592. The asking price is £297 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 29,100 miles lower than typical for a 2018 BMW 4 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 26 June 2027. 32,285 miles at the last test.

98 other cars with the same year, trim, gearbox and fuel are for sale from £10,000 to £20,995.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£10,000	120,000 miles
£10,190	109,000 miles
£10,990	128,000 miles
£10,995	127,000 miles
£10,995	75,432 miles

These cars have covered 24,000–128,000 miles, compared with 33,856 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

Sycamore Stamford, Stamford. Across the dealer network: 27 cars for sale.

Dealer postcode: PE9 2PR.