The 2013 Lexus GS 450h’s fuel-economy estimates beat the automaker’s expectations with an EPA-estimated 29/34/31 mpg city/highway/combined, Toyota announced. That’s about a 35% improvement in gas mileage over the 2011 GS 450h, which gets 22/25/23 mpg. When Toyota officials unveiled the hybrid at the 2011 Frankfurt Motor Show , they expected a 30% improvement over the 2011 model.
Like the previous GS 450h, Lexus promises V-8 power with four-cylinder efficiency. The 338-horsepower hybrid system has two electric motors — one for each rear wheel — and they can power the GS using electric only or in tandem with the 3.5-liter V-6. Overall, Toyota says the 2013 GS 450h should hit zero to 60 mph in 5.6 seconds, which is 0.4 seconds slower than the 2011 GS 450h but 0.1 seconds faster than the 2013 GS 350. The hybrid model gets high- and low-beam LED headlamps and LED taillamps standard. The cabin has a standard climate control system, a bamboo-trimmed steering wheel and a hybrid monitoring system.Compared with its only competitor, the 2012 Infiniti M Hybrid , which nets a 27/32/29 mpg rating, the Lexus 450h is both more fuel efficient and more powerful.
The redesigned 2013 GS 350 has an EPA-estimated 19/28/23 mpg, a 4.5% increase over the 2011 Lexus GS 350.
The 2013 Lexus GS 350 goes on sale in February, and the 450h will go on sale next spring. Pricing for both models is unavailable.