The 2014 Lexus CT 200h faces competition from a wider range of hybrid vehicles than it did four years when it was launched. But its 42-mpg combined gas-mileage rating seems to be close to what owners get in the real world--which can't be said about newer competitors like the Ford C-Max Hybrid, recently lowered from 47 mpg to 43 mpg after a firestorm of owner complaints.
The most luxurious editions of the C-Max, or the Fusion Hybrid that uses the same powertrain, may offer competition to the CT 200h. They're larger and more capacious vehicles, but they lack the Lexus name--and the much more pleasant service and accommodation offered by the whole Lexus dealer experience.
Real-world mileage is a tricky thing. Drive the Lexus CT hard all the time, and real-world mileage could plummet into the high 20s or low 30s. But we expect most people will get close to the EPA rating of 42 mpg city, 41 mpg highway. Our own road tests have delivered numbers from the high 30s into the mid 40s, depending on how the CT was used.