The M-specific styling touches are nice, but the 2009 BMW M5 isn't anything you haven't seen before.
Most reviews read by TheCarConnection.com indicate the BMW M5 looks similar to its brethren. ForbesAutos adds that the BMW M5 "does look different than the standard 5 Series, but not different enough for the average driver to immediately notice." Cars.com says that the M5 has a "unique front face to distinguish it from other 5 Series sedans." The M5 BMW is, according to Edmunds, a "high-performance variant of the midsize 5 Series performance sedan available in one trim only." Kelley Blue Book notes that "critics have been harsh on BMW's current styling," but they also comment "all 5 Series models get styling enhancements for 2009." Among those styling enhancements are "redesigned headlights, taillights, front air dam, rear bumper and rear diffuser," while "the M5 sports a deeper, more aggressive front air dam with larger center air intake and brake air inlets." ForbesAutos also reports that the 2009 BMW M5 features "deeper side sills, a decklid spoiler and four tail pipes large enough to spit tennis balls."
Regarding the cabin, the 2009 BMW M5 gets "special brushed aluminum trim" says MyRide.com, "but you can choose from two different wood tones if you want a warmer cabin atmosphere." Edmunds feels the interior "looks unchanged," though "a few key updates" have been made for the current model, including a "simple, modernistic dashboard" with an attempt at simpler controls for iDrive. Kelley Blue Book notices several changes right away from previous M5 BMWs, including the "power window switches relocated to the armrests" and the "leather-wrapped center console and passenger door handles."