Utility
The Honda and the G3 can accommodate the same number of passengers.
Dimensions
The Fit's tank is almost the same size as the G3's, though the Pontiac G3's is a tad larger.
The Pontiac G3 and the Fit compete for the same parking spaces.
Convenience
You'll definitely have to take the Honda Fit for a fill-up more often than the Pontiac because of its tank size and gas mileage.
Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. It costs about the same to get the Honda to the dealership as the Pontiac G3.
There honestly isn't much of a difference in gas mileage here, but if you must know, the Pontiac G3 is a bit more economical than the Honda.
Regarding MSRP, the Honda Fit costs significantly more than the Pontiac.
Handling
With their comparable turning circles, the Pontiac G3 and the Honda Fit likely handle roughly the same into and out of tight spots.
Drivetrain
The Pontiac G3's engine isn't much bigger than the Fit's.
Torque is roughly equivalent to acceleration, and in this respect, the Honda Fit isn't much more powerful than the Pontiac G3.
The G3 has no lessons to learn as far as pickup from the Honda.
Comfort
Taller drivers will substantially enjoy the extra head room in the Honda Fit's front cabin compared to the Pontiac G3.
The Fit is not particularly roomier for your passengers than the Pontiac G3.
Warranty
The Pontiac and the Honda Fit have the same basic warranty.