The seven speed transmission and 304 HP engine give the E500 the ability to make even the most routine trip a fun experience. The car responds with you press the gas pedal. The feel of the brake-by-wire requires a little getting used to, but the brakes are excellent. A well engineered vehicle as would be expected for this price level car.
Engine-transmission, reputation for reliability, pride in ownership of a vehicle from a manufacturer who stresses quality of engineering.