IIHS Top Safety Pick. Scores 29 Highway MPG and 20 City MPG! This Chevrolet Equinox boasts a Gas I4 2.4/145 engine powering this Automatic transmission. WHEELS, 18" (45.7 CM) CHROME-CLAD ALUMINUM, TRANSMISSION, 6-SPEED AUTOMATIC WITH OVERDRIVE (STD), TIRES, P235/55R18... via HomeNet, Inc.