The 2012 Toyota Highlander offers two types of engines: The 2.7L 4-cylinder engine which produces 187 horsepower with the gas mileage estimated of 25 MPG in highway rating. Standard on the Limited grade and available for the others is the 3.5L 6-cylinder engine which produces 270 horsepower. All the 2012 Toyota Highlander Base and SE models are equipped with 17 inch alloy wheels with 245/65/ R17 tires. Whereas, the Limited grade is equipped with 19 inch alloy wheel with 245/55/ R19 tires. All the 2012 Highlander models are equipped with a direct tire pressure monitoring system designed to alert driver if there is a critical drop in tire pressure. 2012 Highlander comes with seven standard airbags which include driver and front passenger airbags, front seat side airbags and a driver’s knee airbag.