Equipped with the mid-grade powertrain choice, a 3.5-liter V6 connected to a four-speed automatic transmission, the Pontiac G6 Sedan’s calling card is fuel efficiency. The engine, delivering 224 horsepower to the front wheels, is gutsy enough but not as strong or refined as the primary competitors’. The trade-off is good fuel economy: we averaged 25.7 mpg during our trip, smack in the middle of the EPA’s 20 mpg city and 28 mpg highway rating. The four-speed automatic is down a cog or two on the competition, but we rarely found it detrimental to the G6’s drivability because it’s geared to deliver lively off-the-line acceleration.