Drivetrain
The Pontiac Torrent's engine is significantly larger than the Subaru's. Remember that more sizeable engines may use more gasoline than smaller ones.
Utility
The Pontiac Torrent and the Subaru Forester can accommodate the same number of passengers.
Convenience
You'll quite certainly take the Subaru Forester for a fill-up approximately as often as the Pontiac Torrent.
Comfort
While the front cabin in the Forester offers a bit more head room than the Pontiac Torrent, there really isn't much of a difference.
The Pontiac Torrent is not particularly roomier for your passengers than the Subaru.
Dimensions
Your wallet will hurt more every time you fill up the Pontiac than the Forester because of its larger tank.
The Subaru Forester and the Pontiac Torrent compete for the same parking spaces.
The Subaru Forester's shorter wheelbase may produce a less-settled highway ride but a nimbler feel in daily traffic than the Pontiac Torrent.
Cost
There frankly isn't much of a difference in gas mileage here, but if you must know, the Subaru Forester is somewhat more economical than the Pontiac.
The Subaru Forester doesn't pale in comparison to the Torrent regarding gas mileage.
With respect to MSRP, the Subaru Forester costs considerably less than the Pontiac Torrent.
Overview
The Subaru Forester and the Pontiac Torrent have the same basic warranty.