2018 BMW 4 Series 2.0 430i M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 430i GPF M Sport Auto RWD Euro 6 (s/s) 2dr (249 bhp)
• Year: 2018
• Mileage: 10,000 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 249 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 148 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 10,000 miles, this 2018 BMW 4 Series M Sport has covered about 52,400 fewer miles than other 2018 BMW 4 Series cars. The dealer is asking £23,995, which is £2,641 above the AskCar estimate of £21,354. To work out the AskCar estimate, we analyse UK dealer adverts for 1,833 BMW 4 Series cars across different ages and specifications. We first recorded this car for sale 101 days ago. Its advertised mileage matches the government's MOT record. The seller is Christchurch Motor Company, based in Christchurch. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Above the going rate: £2,641 (12%) over the AskCar estimate of £21,354.

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 1,833 priced BMW 4 Series adverts across different ages and specifications, as of 5 November 2026.

A 2018 BMW 4 Series with the 2.0 petrol engine is typically advertised at £14,500: the median of the 117 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2018 BMW 4 Series has been on sale for at least 101 days.

Price history

AskCar first saw this advert on 27 July 2026 at £23,995. 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 5 November 2026: valid until 1 April 2027.

It has had 5 MOTs. The latest, on 17 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 8,907 miles, which matches the advertised 10,000 miles.

Advertised mileage is about 52,400 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 £19,950, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2018 BMW 4 Series M Sport, 2.0 petrol convertible, blue. Mileage: 18,400 miles. Price: £19,950, £4,045 less than this car. Dealer: JS Prestige and Performance in Enfield. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-5d9067742da5
• 2018 BMW 4 Series M Sport, 2.0 petrol convertible, white. Mileage: 28,363 miles. Price: £16,590, £7,405 less than this car. Dealer: Shirlton Car Sales in Cannock. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-24f01be90652
• 2018 BMW 4 Series M Sport, 2.0 petrol convertible, grey. Mileage: 28,500 miles. Price: £18,265, £5,730 less than this car. Dealer: Cox Motor Group Blackpool Automart in Blackpool. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-31d6a3327406

• The nearest: 2018 BMW 4 Series M Sport, 2.0 petrol convertible, blue, 55 miles from this car. Mileage: 38,310 miles. Price: £15,995, £8,000 less than this car. Dealer: Anchor Cars in Reading. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-9598e684041b