2018 BMW 4 Series 2.0 430i M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 430i M Sport Auto RWD Euro 6 (s/s) 2dr (249 bhp)
• Year: 2018
• Mileage: 43,927 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 249 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: White
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 BMW 4 Series M Sport has covered 43,927 miles, around 19,100 fewer miles than is typical for its age. Priced at £17,495, it is advertised £219 below the AskCar estimate of £17,714. The AskCar estimate uses 1,826 UK dealer adverts for the BMW 4 Series, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this car for sale 1 day ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Allwood Automobiles, based in Waltham Cross. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £219 (1%) under the AskCar estimate of £17,714.

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

It draws on 1,826 priced BMW 4 Series adverts across different ages and specifications, as of 6 November 2026.

A 2018 BMW 4 Series with the 2.0 petrol engine is typically advertised at £14,500: the median of the 116 for sale on AskCar, as of 6 November 2026.

Time on sale

AskCar first saw this 2018 BMW 4 Series advertised 1 day ago. About 4 in 10 of 2018 BMW 4 Series cars are gone from sale within a month of being advertised: 131 of the 297 first advertised between 11 July 2026 and 3 October 2026.

Price history

AskCar first saw this advert on 5 November 2026 at £17,495. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 25 February 2027.

It failed its MOT on 26 February 2026 (front windscreen wiper does not clear the windscreen effectively both) and passed later the same day.

Advisories at the latest test: offside rear road wheel slightly distorted; offside front road wheel slightly distorted; nearside front road wheel slightly distorted.

Mileage at that test: 42,540 miles, which matches the advertised 43,927 miles.

Advertised mileage is about 19,100 miles lower than the median mileage of a 2018 BMW 4 Series on AskCar.

Similar cars

13 other 2018 BMW 4 Series M Sport 2.0 petrol automatic convertibles are for sale at UK dealers, from £14,489 to £23,995, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW 4 Series M Sport, 2.0 petrol convertible, white. Mileage: 44,000 miles. Price: £14,489, £3,006 less than this car. Dealer: Berengrave Services in Gillingham. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-42092cdb1ca8
• 2018 BMW 4 Series M Sport, 2.0 petrol convertible, grey. Mileage: 48,228 miles. Price: £14,960, £2,535 less than this car. Dealer: Evans Halshaw Kia Hull in Kingston upon Hull. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-90668f76e700
• 2018 BMW 4 Series M Sport, 2.0 petrol convertible, blue. Mileage: 38,310 miles. Price: £15,995, £1,500 less than this car. Dealer: Anchor Cars in Reading. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-9598e684041b

• The nearest: 2018 BMW 4 Series M Sport, 2.0 petrol convertible, blue, 6 miles from this car. Mileage: 18,400 miles. Price: £19,950, £2,455 more than this car. Dealer: JS Prestige and Performance in Enfield. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-5d9067742da5