2011 Grand Cherokee is Impressive. It will have the new Pentastar Chrysler engines that have been being developed for the last several years. The base engine is a flexible-fuel 3.6-liter V-6 engine pumping out 280 horsepower (209 kW) and 260 lb.-ft. of torque (353 N•m) @ 4,800 rpm — an improvement of 70 hp and 25 lb-ft over the current 3.7 liter V6. Despite that, and a heavier vehicle (4,470 lb vs 4,261 lb), gas mileage should be 11% higher.
The 3.6-liter V-6 engine is a completely new, state of the art design with dual overhead camshafts (DOHC) and a high-pressure die-cast aluminum cylinder block with variable-valve timing (VVT). Gas mileage is better than the Toyota 4Runner and similar to the less off-road-worthy Honda Pilot.

The interior is superior to prior Grand Cherokees making it much more comfortable for all passengers!