The 2015 Lexus NX 200t has been rated by the EPA at 24 mpg combined with all-wheel drive, and 25 mpg combined with front-wheel drive. Highway mileage is 28 mpg for both. That's about average for a luxury compact crossover with 235 hp.
The hybrid NX 300h gets better ratings, at 33 or 32 mpg combined for the front- and all-wheel-drive models, respectively.That's a better rating than the two diesels in the segment, with 28 mpg combined delivered by the diesel Mercedes GLK 250 BlueTEC and 27 mpg combined from the Audi Q5 TDI.
In both cases, though, it remains to be seen whether the real-world mileage delivered by the new Lexus NX lives up to its EPA ratings. The larger Lexus RX hybrid mid-size crossover, for one, tends to underachieve its EPA ratings slightly. Our own road tests of the German diesel crossovers, however, showed that they were often capable of delivering significantly better efficiency than their EPA ratings.