Note in the information above:

"High-Efficiency Internal Combustion Engine (ICE). The 2.5L iVCT I-4 engine gets variable valve timing on the intake side (Intake Variable Cam Timing, iVCT), as well as a wide-band lambda sensor in place of a conventional oxygen sensor. The compression ratio in the engine is 12.3:1."

I'm hoping the new wide-band lambda sensors will help solve the problem of reduced MPG due to changes in fuel quality (ethanol). The wide-band lambda sensors are now used to increase performance, even in race engines. These sensors help the ECU adjust air/fuel mixtures faster and much better than the conventional oxygen sensors now used in the FEH/MMH.