The E350 models come with a 3.5-liter V6 engine. The E350 sedan comes with a seven-speed automatic while the all-wheel-drive 4Matic has a five-speed automatic. E350s are available in Sport or Luxury trim. The E350 4Matic wagon is equipped comparably to the sedan. A power liftgate and cargo organizer are standard, along with a folding third seat that increases passenger capacity to seven. Safety features that come standard on all models include 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.For 2007, the Mercedes-Benz E-Class gets more powerful engines, subtle styling changes, new interior elements, and a few tweaks for handling and safety.