As AutoblogGreen points out, Ford will soon be facing tough competition in the compact hybrid CUV segment with the introduction of the Saturn Vue two-mode hybrid. What better time, then, to update the Ford Escape Hybrid and Mercury Mariner Hybrid for 2009? The big news is the addition of a new 2.5L four-cylinder to replace the old 2.3L engine. Not only is the new engine larger, but it also adds variable valve timing on the intake to boost power by 17 up to 170 horsepower. The 2.5L also serves as the new base engine for the standard Escape and Mariner, but uses the Atkinson cycle in the hybrid models.