The redesigned C-Class builds on the sportiness of the previous version, with a polished powertrain and honed handling. But the overly-complicated controls and a spongy brake pedal mar what is otherwise a splendid-driving sedan. The C300's punchy, 2.0-liter turbo four-cylinder and smooth-shifting 9-speed automatic give plenty of invigorating power anytime you need it. The powertrain benefits from a 48-volt mild-hybrid system that contributes to the car's commendable 29 mpg overall. Handling is sporty thanks to a tightly controlled chassis and sharp steering. The ride is steady and composed, but too stiff with the optional AMG sport suspension. The front seats are comfortable and supportive, and cabin fit and finish is impressive. The infotainment system is still distracting, and some new capacitive-touch controls add further frustrations. AEB with pedestrian and cyclist detection and BSW are standard. It's disappointing that reverse automatic emergency braking, and LDW are only optional.