BMW 4 SERIES GRAN COUPE (2017-21) 420I 5DR GRAN COUPE 2.0 SS 184 EU6 M SPORT 6SPD

Buyer's Guide & Data from our Checks
The BMW 4 Series Gran Coupe (2017-21) 420I 5DR Gran Coupe 2.0 SS 184 EU6 M Sport 6SPD is a stylish and sporty hatchback aimed at those seeking a blend of luxury and practicality. It’s positioned in the UK market as a premium coupe with four doors, making it suitable for professionals, couples, or small families who want a car that looks good and performs well. Its sleek design and M Sport styling give it a distinctive and modern appearance, making it stand out among rivals like the Audi A5 or Mercedes-Benz CLA.
Data from mycarcheck.com shows that this model is quite popular, with nearly 600 look-ups and over 340 unique VINs registered, indicating sustained interest and a good variety of used options. The average recorded mileage is around 39,000, with many examples having only one previous owner, which is appealing for buyers looking for reliable, well-maintained cars. The typical price for private sales is around £18,200, reflecting its value in the used car market.
This model is often used for daily commuting, family outings, or those who desire a luxury car with sporty handling that’s also practical for regular use. Its balance of style, comfort, and efficiency makes it a popular choice, especially among drivers who appreciate a sharp driving experience. Known for reliability and a refined interior, the BMW 4 Series Gran Coupe (2017-21) 420I offers a premium feel at a competitive price, making it a standout in its class when compared to other sporty coupe-style cars.
Don’t risk buying a BMW 4 Series Gran Coupe without checking for hidden finance, damage or mileage irregularities. Enter the reg now and protect yourself from costly surprises. Get your check done instantly before you commit.
Key Findings
The following statistics are drawn from our checks of 345 different vehicles, run between February 18th 2021 and April 30th 2026. These real-world insights provide context for this vehicle's place in the market, as well as its typical usage.
593
Lookups
Lookups
26
Hidden Histories
Hidden Histories
47k
Average Mileage
Average Mileage
£18,200
Average Valuation
Average Valuation












