Automakers tweak older vehicles to boost mileage Forbes, NY - _Chevrolet Cobalt, Pontiac G5 XFE: Up 1 mpg on the highway to 37. _Chevrolet Malibu, Saturn Aura, Pontiac G6 with four-cylinder engines and six-speed ... |
Automakers tweak older vehicles to boost mileage Forbes, NY - _Chevrolet Cobalt, Pontiac G5 XFE: Up 1 mpg on the highway to 37. _Chevrolet Malibu, Saturn Aura, Pontiac G6 with four-cylinder engines and six-speed ... |