The competition between these two was pretty tight for a while. Pricewise, the Mercedes was only $480 more than the Chevy for the base model though the Chevy became a pretty good bargain once the options came into play. Both of the beasts excelled at acceleration (8.5 second, 0-60) with the Tahoe ahead by the slimmest of whiskers as long as they traveled in a straight line. With the cones set up, the Mercedes superior agility really shone, whipping through the course at 60 mph while the Tahoe had more waddle than a flock of ducks on the hoof. Also, in the all important fuel economy category, the diesel pulled decisively ahead, at one point returning 26 mpg during a stretch of highway driving where the Tahoe could "only" eke out a 21.9 figure over that same stretch. Advantage diesel. To watch these two duke it out auto à auto, hit the jump.