2007 Mercedes-Benz E550

New for 2007, the Mercedes-Benz E550 replaced the previous year's E500. And in keeping with the Mercedes standard practice of naming its vehicles after engine size, the E550 was powered by a 5.5-liter, 32-valve V8 engine that produced 382 horsepower, an increase of 80 horsepower over the previous year's E500 sedan.

The standard transmission was a seven-speed automatic with electronically controlled shifting and a driver-adaptive programming that adjusted shift points depending on the driver's style. The transmission also included an Optimum Gear that selected, at a nudge of the shift lever, the best gear for acceleration or braking, as well as a Comfort mode, which adjusted upshifts at a lower rpm for better control in difficult driving conditions.

The E550 was also equipped with an Electronic Stability Program that monitored steering and braking to keep the car stable and balanced under aggressive driving. All-speed traction control, anti-lock brakes, and Brake Assist, which provided maximum available braking in an emergency situation, were also part of the package. The automaker's 4MATIC all-wheel-drive system was available as an option.

Also new is a PRE-SAFE system, which works with the Brake Assist and Electronic Stability Program to sense impending accidents. In the event of an accident, the system will make adjustments to the seats and close the sunroof and windows to ensure optimal safety for the driver and passengers.

Other standard features included a four-zone automatic climate control, heated 10-way power front seats with three memory settings, luxury upholstery and trim, Burl Walnut wood interior trim,  electronic cruise control, a power tilt and sliding glass sunroof, a SmartKey keyless entry system, and a 12-speaker Harmon/Kardon digital surround-sound stereo system with a CD player, CD changer, and optional DVD navigation system.

The E550 was also available with, at no extra cost, an optional Sport Package that included sculpted side skirts, a sport rear bumper with dual exhaust, 18-inch 10-twin-spoke wheels, perforated disc brakes, headlamp washers, and a sport suspension. Inside, the Sport Package added Black Birdseye Maple wood trim and a matte chrome instrument cluster with white gauges.

Drivers were most impressed with the E550's power and performance, though they also liked its handling, smooth ride, and styling. On the downside, some drivers noted the E550 tended to guzzle fuel, while others noted problems with repairs and Mercedes' customer service.