KBB.com 10 Most Awarded Brands. Only 25,044 Miles! Boasts 26 Highway MPG and 19 City MPG! This Lexus IS boasts a Premium Unleaded V-6 3.5 L/211 engine powering this Automatic transmission. Wheels: 17 x 7.5 Split 5-Spoke Alloy, Valet Function, Trunk R...