BMW 4 SERIES CONVERTIBLE (2017-20)

Buyer's Guide & Data from our Checks
The BMW 4 SERIES CONVERTIBLE (2017-20) is a premium, four-seat convertible that brings open-air motoring to the UK’s executive-car market. It sits between compact cabriolets and larger luxury cruisers, offering a more practical choice than a two-seat sports car. mycarcheck.com records 8,955 look-ups and 3,308 distinct VINs for this model alone.
Its folding roof, smart cabin and assured feel suit couples and professionals seeking a stylish commuter and weekend escape. Rear-seat and luggage space are tighter than in a saloon, limiting family practicality. Checks show average recorded mileage of 37,000 and annual use of 7,000 miles, with about two previous keepers.
Rivals include the Audi A5 and Mercedes-Benz C-Class convertibles, but the BMW is known for sporty looks, enjoyable handling and everyday comfort. mycarcheck.com shows an average private-sale value of £23,800; condition and history matter. Before buying, carefully check mileage, service history and roof operation on any BMW 4 Series Convertible.
A BMW 4 Series Convertible can hide outstanding finance, write-off history, theft or mileage problems—and age-related faults may add to the bill. Enter the reg now and check before you buy.
Key Findings
The following statistics are drawn from our checks of 3,308 different vehicles, run between February 17th 2021 and October 31st 2026. These real-world insights provide context for this vehicle's place in the market, as well as its typical usage.
8,955
Lookups
Lookups
334
Hidden Histories
Hidden Histories
44k
Average Mileage
Average Mileage
£23,800
Average Valuation
Average Valuation
Model Variants
420D 2DR CONVERTIBLE 2.0 DPF SS 190 EU6 M SPORT 6SPD
420D 2DR CONVERTIBLE 2.0 DPF SS 190 EU6 M SPORT AUTO8
420D 2DR CONVERTIBLE 2.0 DPF SS 190 EU6 SPORT 6SPD
420D 2DR CONVERTIBLE 2.0 DPF SS 190 EU6 SPORT PROFESSIONAL MEDIA AUTO8
420I 2DR CONVERTIBLE 2.0 SS 184 EU6 M SPORT 6SPD
420I 2DR CONVERTIBLE 2.0 SS 184 EU6 M SPORT AUTO8
420I 2DR CONVERTIBLE 2.0 SS 184 EU6 SPORT AUTO8
420I 2DR CONVERTIBLE 2.0 SS 184 EU6 SPORT PROFESSIONAL MEDIA 6SPD
430D 2DR CONVERTIBLE 3.0 DPF SS 258 EU6 M SPORT AUTO8
430I 2DR CONVERTIBLE 2.0 SS 252 EU6 M SPORT 6SPD
430I 2DR CONVERTIBLE 2.0 SS 252 EU6 M SPORT AUTO8
435D XDRIVE 2DR CONVERTIBLE 3.0 DPF SS 313 EU6 M SPORT AUTO8
440I 2DR CONVERTIBLE 3.0 SS 326 EU6 M SPORT AUTO8
M4 2DR CONVERTIBLE 3.0 BITURBO SS 431 EU6 6SPD
M4 2DR CONVERTIBLE 3.0 BITURBO SS 431 EU6 DCT AUTO7
M4 2DR CONVERTIBLE 3.0 BITURBO SS 450 EU6 30 JAHRE EDITION DCT AUTO7
M4 2DR CONVERTIBLE 3.0 BITURBO SS 450 EU6 COMPETITION PACK DCT AUTO7












