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 premium five-door hatchback, blending coupé-inspired styling with a practical tailgate. It sits between mainstream family hatchbacks and executive saloons in the UK market, offering a more distinctive, upmarket choice without giving up everyday usability.
With a comfortable cabin, useful rear doors and lively petrol performance, it suits commuters, couples and small families seeking a refined daily car that is enjoyable on longer journeys. M Sport trim adds a sportier look and feel, while the 420i balances brisk response with sensible running costs; its six-speed manual appeals to drivers who enjoy involvement.
Mycarcheck records 647 look-ups across 370 VINs, averaging 41,000 miles and just over one previous keeper; average private-sale value is £17,700. Against Audi A5 Sportback and Mercedes CLA rivals, its standout is useful hatchback practicality with premium BMW style.
Buying a BMW 4 Series Gran Coupé? Outstanding finance, write-offs, hidden damage, theft or clocked mileage could turn a smart buy into a costly mistake. Enter the reg now and check before you commit.
Key Findings
The following statistics are drawn from our checks of 370 different vehicles, run between February 18th 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.
647
Lookups
Lookups
33
Hidden Histories
Hidden Histories
50k
Average Mileage
Average Mileage
£17,700
Average Valuation
Average Valuation












