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The 2012 Chevy Impala can hold up to 17 gallons of fuel and performs optimally when fueled with regular unleaded gas that has an octane rating of 87. Some vehicles, especially high-performance ones with more compression or turbo-charged engines, may require premium gas with an octane rating of 97 or higher for proper ignition. The Impala is known for its good fuel efficiency, achieving a combined mpg of 22 with 18 mpg in the city and 30 mpg on the highway. Its 3.6 liter V6 engine delivers 300 horsepower and 262 lb-ft of torque, weighing between 3,555 and 3,649 lbs.
The 2012 Chevy Impala runs on regular fuel.