With the M6 Gran Coupe, BMW has an existential crisis.
The 2019 M5 across the showroom is newer—and faster. The 2019 M6 Gran Coupe is older, sure. But just look at it.
The 2019 M6 gets a 6.4 on our scale. It may not be around for much longer, an 8-Series four-door is reportedly in the works.
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