What kind of gas does the 2012 Chevy Impala take?

The 2012 Chevy Impala holds up to 17 gallons of fuel and runs best on regular unleaded gas with an octane rating of 87. Other vehicles needing premium fuELRequire an octane rating of 97 or higher. In some vehicles higher octane levels are required for proper firing, and high-end cars using more compression in their combustion chambers or employing a turbo-charged engine, often need premium gas. The Impala offers good fuel economy with a combined mpg of 22; 18 miles per gallon in the city and 30 miles per gallon on the highway. The 3.6 liter V6 engine offerS300 HP, 262 lb-ft of torque and a curb weight of 3,555 to 3,649 lbs.