2020 BMW 4 Series

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

£18,297

Fair price: within 8% of the typical £19,402 for this model, age and mileage, drawing on 1,725 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
30,335 miles
Year
2020
Fuel type
Diesel
Body type
Convertible
Engine
2.0 L
Gearbox
Automatic
Power
187 bhp
Seats
4
CO2
124 g/km
Colour
Black
Doors
2
Driven wheels
Rear Wheel Drive
Engine badge
420d
Emissions standard
Euro 6

About this car

With 30,335 miles on the clock, this 2020 BMW 4 Series M Sport has done roughly 13,600 fewer miles than a typical 2020 BMW 4 Series. At £18,297, it is advertised £1,105 below our estimated market asking price of £19,402. The estimate uses 1,725 UK dealer adverts for the BMW 4 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 150 days ago. Its asking price has since fallen by £1,598. That history is worth bearing in mind when speaking to the dealer. Its recorded MOT is valid until 3 March 2027, and its advertised mileage is consistent with the latest MOT reading. The seller is Essex Car Company, based in Rainham.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 28 May 2026, 150 days ago. Advert duration calculated on 25 October 2026. Net asking-price reduction: £1,598 from the first recorded £19,895. 4 price reductions recorded, the latest observed on 8 September 2026.

Recorded asking prices
Date observedAsking price
29 May 2026£19,895
8 June 2026£19,995
7 July 2026£19,995
10 August 2026£19,400
21 August 2026£18,999
25 August 2026£18,489
27 August 2026£18,795
8 September 2026£18,297
23 October 2026£18,297

Price and mileage comparison

Estimated market asking price: £19,402. The asking price is £1,105 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 1,725 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 13,600 miles lower than typical for a 2020 BMW 4 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 3 March 2027. 30,384 miles at the last test.

24 other cars with the same year, trim, gearbox and fuel are for sale from £14,299 to £24,830.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£14,29986,465 miles
£14,50052,196 miles
£16,95058,367 miles
£17,19947,070 miles
£17,29068,400 miles

These cars have covered 22,766–86,465 miles, compared with 30,335 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 · 2020 BMW 4 Series price guide

More like this

How to contact the dealer, its opening hours and the cheaper cars like this one are on this AskCar page.

Vehicle photos

AskCar lists 589,789 cars from 13,079 UK dealer locations, read and updated daily from dealer websites. More than any other UK site. No dealer pays to be listed.