Put your foot down and the Sprinter leaps forward, pinning you into your seat as if a rocket were attached to the back, the world blurring around you as you charge to extra-legal speeds in the blink of an eye. Just kidding…remember, this is a cargo van, so don't be cranky that it's slow to accelerate. The diesel engine in the van we drove had no problem getting the Sprinter around, and as big vans go it's pretty good. The transmission shifts quickly and smoothly, and it's as refined a drivetrain package as you'd expect from a Mercedes-sourced heavy duty truck. But stopwatch performance isn't this van's forte.