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The 2013 Acura RDX is a bit of an anomaly. While most automakers are switching to smaller, turbocharged engines to achieve higher EPA numbers and entice buyers (as well as meet new government-mandated CAFE requirements), Acura has chosen instead to drop the RDX's turbocharged four-cylinder in favor of a normally aspirated V-6. The crossover still manages to improve upon its previous fuel economy figures, although the increase is fairly small: the all-wheel-drive model sees the most significant increase with a combined rating of 22 mpg, up from 19 mpg. This might not sound like a particularly good number for a small crossover but when compared to others in its class, it stacks up pretty well: six-cylinder all-wheel-drive versions of the Audi Q5, BMW X3, and Cadillac SRX achieve 20, 21, and 18 mpg, respectively.