The E300's 241-hp, 2.0-liter turbo four-cylinder is linked to a nine-speed automatic. This combination works well, but it won't set your heart on fire. Then again, we got a commendable 24 mpg overall. The car is quiet and handles with newfound agility. Though the ride is comfortable, it lost some plushness. Inside, the dash features high-resolution displays, but the controls have grown more complicated. Even adjusting the seat's lumbar support is a multistep process done through the central controller and screen. New technology gives the E-Class the ability to follow the road and steer itself temporarily as a driver-assist feature. Changes for 2018 include new coupe and convertible body styles, powered by a 329-hp 3.0-liter turbocharged V6 hooked up to a nine-speed automatic. An E400 sedan also joins the line with the same powertrain as the new coupe and convertible. Finally, a fire-breathing AMG E63 S wagon and sedan are new, and get a 603-hp 4.0-liter V8 turbo.

Subsequent updates, including revised steering, moved the car back to benchmark status. Our diesel-powered BlueTec test model, (with the Luxury package), provided a more comfortable ride and surprisingly, better steering feedback. Interior accommodations are plush, with comfortable and supportive seats and excellent fit and finish. The Luxury trim is sporty enough; the Sport version has a very firm ride. A convertible, wagon, and coupe are also offered.