The Pontiac Vibe is the same basic car as the Toyota Matrix, down to the body style, instrument cluster design, and materials. Key differences lie in the technology. Where Toyota offers an in-dash navigation system and a JBL premium stereo, Pontiac has OnStar and a Monsoon stereo.
The Vibe GT's standard 2.4-liter four-cylinder engine produces 158 horsepower. The Vibe is also available in non-GT trim with a 1.8-liter four cylinder engine producing 132 horsepower. With the Vibe GT, we averaged more 28 mpg for a freeway-heavy road trip.
The Vibe GT has this stabilizer bar under the hood, which should give the car more rigidity in the turns. But the car has a fairly high center of gravity, so we weren't inclined to throw it really hard around the corners.
The mirror bezel holds buttons to connect to an OnStar operator or use the OnStar phone service. We were impressed with the navigation service, which amounts to the operator reading out a list of directions.