What might the 2013 Lexus GS 450h add to the additional performance goodness delivered in the 2012 Lexus GS 350? More power and more fuel efficiency, for starters. The second-gen hybrid system boots out 338 total horsepower for a 5.6-second sprint to 60 mph. That’s 32 hp more than the GS 350 and a 0.1-second improvement on the stoplight run. Funk Flex Find Flex On Google+