KBB.com Brand Image Awards. Scores 28 Highway MPG and 30 City MPG! This Lexus RX 450h boasts a Gas/Electric V-6 3.5 L/211 engine powering this Variable transmission. Cruise Control w/Steering Wheel Controls, Wheels: 18 x 7.5 5-Spoke Aluminum, Variable Intermittent Wipers.... via CarSoup