Utility
Neither the GMC Envoy nor the Jeep Grand Cherokee has a marked advantage with respect to seating capacity.
There's no clear winner between the GMC Envoy and the Jeep Grand Cherokee in terms of transporting cargo.
The Grand Cherokee outpulls the GMC by a sizeable margin.
Performance
With respect to horsepower, the Jeep Grand Cherokee packs quite a wallop and will knock the GMC Envoy down a few rungs. On the other hand, note that high horsepower engines often command higher insurance premiums.
Dimensions
The Jeep Grand Cherokee's tank is about the same size as the GMC's, though the GMC's is a bit bigger.
The Jeep Grand Cherokee and the GMC Envoy compete for the same parking spaces.
Convenience
You'll likely take the GMC Envoy for a fill-up almost as often as the Jeep.
Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. It costs approximately the same to get the GMC to the dealership as the Jeep.
The Envoy consumes a lot of gasoline compared to the Grand Cherokee.
The Grand Cherokee isn't much pricier than the Envoy regarding MSRP.
Handling
With their similar turning radii, the GMC Envoy and the Jeep definitely handle almost the same into and out of tight spots.
Drivetrain
The Grand Cherokee's engine is somewhat smaller than the GMC Envoy's, but not terribly so.
Torque equals pickup, and the GMC Envoy will have picked up and gone by the time the Jeep Grand Cherokee finally gets moving.
Comfort
While the front cabin in the GMC Envoy offers a bit more head room than the Grand Cherokee, there honestly isn't much of a difference.
While the rear of the GMC provides a bit more head- and leg-room than the Jeep, there frankly isn't much of a difference.
Warranty
The Jeep Grand Cherokee and the GMC have the same basic after-sale protection.