Shoehorning an immensely potent power plant in an unsuspecting chassis has always resulted in dreamy sleepers. (Proof: Paul Newman’s Buick Grand National-powered 1988 Volvo 740 Turbo wagon.) When that upfitting is done by the factory, even better. Which is why whoever had the idea to drop Mercedes-Benz’s prodigious 6.2-liter V-8 mill into its R-Class multipurpose vehicle—Europeans eschew the term “minivan”—is a hero. There’s no need to ask whether the world needed a 507-horsepower German minivan; of course we did. 

The R 63 was only made from July 2006 to June 2007, per the folks at Mercedes-Benz Classic, who own and maintain the unit I recently wheeled. And, per the materials accompanying the snarling people mover, “approximately 100 units [were] produced,” with only about 44 of those heading to the United States. Why so low? Extremely low sales combined with a lack of awareness and advertising meant there was no demand, so Merc dropped production after a single year. 

Still, I was lucky enough to pilot one of the scant R63 AMG units, I am here to tell you this unicorn holds up, nearly 20 years after its inception. Here’s what you learn after spending solid seat time in a 2007 R 63 AMG.