2018 BMW 4 Series 2.0 420i M Sport
Version: 2.0 420i M Sport Auto RWD Euro 6 2dr (Professional Media) (181 bhp)
Price: £15,600. Fair price: £1,124 (7%) over the AskCar estimate of £14,476, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,747 priced BMW 4 Series adverts on AskCar as of 30 October 2026.
AskCar lists 1,781 used BMW 4 Series from 1,037 UK dealerships, as of 30 October 2026.
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
- 54,866 miles
- Year
- 2018
- Fuel type
- Petrol
- Engine
- 2.0 L
- Gearbox
- Automatic
- Power
- 181 bhp
- Seats
- 4
- CO2
- 144 g/km
- Colour
- White
- Doors
- 2
- Driven wheels
- Rear Wheel Drive
- Engine badge
- 420i
- Emissions standard
- Euro 6
About this car
This 2018 BMW 4 Series M Sport is advertised with 54,866 miles, approximately 8,200 below the typical mileage for its age. The AskCar estimate for this car is £14,476. It is priced at £15,600, which is £1,124 above that estimate. The AskCar estimate uses UK dealer asking prices, including 1,747 BMW 4 Series adverts, and accounts for the car’s age, mileage and specification. It first appeared in our advert records 36 days ago. Its recorded MOT is valid until 29 March 2027, and its advertised mileage is consistent with the latest MOT reading. The seller is Sytner Select Cardiff, based in Cardiff.
Stock data as of 30 October 2026.
Price history
AskCar first saw this advert on 24 September 2026, 36 days ago.
| Date observed | Asking price |
|---|---|
| 24 September 2026 | £15,600 |
| 30 October 2026 | £15,600 |
Price and mileage comparison
Fair price: £1,124 (7%) over the AskCar estimate of £14,476.
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 1,747 priced BMW 4 Series adverts across different ages and specifications, as of 30 October 2026.
Advertised mileage is about 8,200 miles lower than the median mileage of a 2018 BMW 4 Series on AskCar.
The advertised mileage is consistent with the last MOT reading.
MOT
MOT: valid until 29 March 2027. 52,166 miles at the last test.
Other matching cars
63 other 2018 BMW 4 Series M Sport automatic petrol cars are for sale at UK dealers from £10,299 to £28,750, as of 30 October 2026.
The 5 cheapest:
- 2018 BMW 4 Series. Price: £10,299. Mileage: 116,703 miles. Dealer: Honest Cars in Leicester. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-a8386b7f5b28
- 2018 BMW 4 Series. Price: £11,295. Mileage: 105,000 miles. Dealer: Eclipse Car Sales in Winchester. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-0c1d50e88c20
- 2018 BMW 4 Series. Price: £11,990. Mileage: 106,123 miles. Dealer: Strategic Vehicle Solutions in Boston. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-364433371cee
- 2018 BMW 4 Series. Price: £12,488. Mileage: 72,600 miles. Dealer: Car Capital in Southall. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-cd7c272be5c3
- 2018 BMW 4 Series. Price: £13,299. Mileage: 57,058 miles. Dealer: Carpoint UK Motor Company in Newport. AskCar page: https://askcar.co.uk/car/bmw-4-series-2018-71a2eaffc0e1
The 63 matching cars have covered 10,000 to 116,703 miles, compared with 54,866 miles for this car.
Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. The AskCar estimate adjusts for these differences.
Browse all BMW 4 Series cars for sale · 2018 BMW 4 Series price guide
More like this
Photos
29 photos of this car are on its AskCar page.
How to contact the dealer and its opening hours are on this AskCar page.
As of 30 October 2026, AskCar lists 580,490 cars and vans from 12,695 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.