Driving Impressions Solid. over-engineered. luxurious. these are some words that can describe the stately Mercedes-Benz CLS-class CLS550 4Matic. The 4.7L V8 that produces 402hp has no problem hauling the big sedan to highway speeds in just 4.6 seconds. that's sports car territory. With the addition of 4Matic all-wheel-drive. the CLS550 will always remain under the complete control of the driver. If things do get out of control. the CLS550 comes standard with ANTI LOCK BRAKES. traction control. stability control. blind-side monitoring. lane departure warning. and PreSafe braking to better protect the occupants inside the vehicle. To drive. the CLS550 offers communicative steering. a strong engine at any RPM. and a chassis that inspires confidence. Regardless of its large physical size. the Mercedes-Benz CLS550 4Matic is a remarkable luxury car to drive. Optional Features Driver Assistance Package I...