The E500 is powered by a 302-hp V8, with more standard equipment than the E350. Upgrades include a four-zone climate control system with separate temperature adjustments for both sides of the cabin, front and rear, and the variable air suspension. Safety features include active front head restraints, active head restraints, and eight airbags: dual front airbags, side-impact airbags for front and rear passengers, and head-protection curtains that run the length of the cabin on both sides. Active safety features start with anti-skid stability electronics and the latest evolution of ABS.For 2006, there is a slight change in E-Class nomenclature, thanks to a change in engine size. A new supercharged E55 AMG wagon also joins the lineup.