The Lexus RX underwent a major makeover last year, which left it with a modernized design and updated mechanics. The 350 is back with a 3.5-litre V6; but with 295 horsepower, it's a little more powerful than before. Your only other option is the RX 450h hybrid. It develops a total of 308 horsepower thanks to the combination of the gas engine and three electric motors. This model doesn’t offer a plug-in feature.