Long before starting to badge 6.2 V8s as 6.3s as a ploy to sell more cars by referring back to its past, Mercedes-Benz created the best sedan in the world by jamming its largest engine into its smaller four-door's body. The 300 SEL 6.3 has been Jay Leno's favorite car ever since.
You are obviously aware of the 6.3’s existence, but it’s hard to envision that such a punk Benz can really exist. I was skeptical myself. Until today.