Mercedes-Benz, the second largest luxury automaker in the world, has recently introduced the next generation of the E Class executive sedan, complete with an all-new family of diesel engines.
The first and primary representative on the roster is the newly developed turbodiesel 2.0-liter four-cylinder engine found under the hood of the E 220d version. Internally called OM 654, the engine will pave the way for the next generation family of engines when it makes its debut on the 2016 E 220d this coming spring. It’s Mercedes’ first all-aluminum four-cylinder diesel engine and has been tipped to come about 13% more efficient than the outgoing 2.1-liter unit. Displacement has gone down a notch to two liters and the weight has gone down as well from 447 lbs (202.8 kilograms) to 371.2 lbs (168.4 kg). The new development technologies have also allowed the engineers to significantly tone down the noise levels and come up with fewer vibrations. It packs the fourth-gen common rail injection and has steel pistons with stepped combustion bowls along with NANOSLIDE cylinder coating.
From the previous 2.1-liter iteration the new 2-liter has upped the ante from 168 horsepower (125 kilowatts) to 192 hp (143 kW) at 3,800 rpm. The maximum torque now stands at 295 pound-feet (400 Newton meters) and the engine has been mated to a nine-speed automatic gearbox. The E 220d will deliver the 62 mph (100 km/h) run in 7.3 seconds and will continue to rumble until up to 149 mph (240 km/h). The fuel economy varies between 4.7 – 4.3 liters / 100 km in the city, 4.1 – 3.6 liters on the highway, and 4.3 – 3.9 liters in the combined cycle, CO2 emissions standing in between 102 and 112 g/km.