The all-new Mercedes-Benz E-Class has been spied undergoing testing on public roads in Germany ahead of a 2016 release.

The all-new Mercedes-Benz E-Class has been spied undergoing testing on public roads in Germany ahead of a 2016 release.

Mercedes-Benz had to make the new C-Class bigger in order to make room for their new entry-level CLA sedan and now they will apply the same recipe on the E-Class set to grow in size to distance itself from the C. Seen here is a fully camouflaged prototype of the E-Class W213 which will ride on the same MRA platform as the C-Class.

Despite the heavy disguise, you will notice the new model will draw its styling cues from its C and S siblings, a decision which will probably be criticized by those wanting a bit more design diversity with the Mercedes-Benz range.

The new E-Class is rumored to receive straight-six gasoline engines along with a powerful 2.9-liter turbodiesel set to be offered with 313 HP (230 kW) and 400 HP (294 kW). The range-topping E63 AMG will return and is expected to adopt the same twin-turbo V8 4.0-liter engine from the C63 AMG and AMG GT. A frugal plug-in hybrid derivative is likely in the works as well with a gasoline or diesel engine teamed up with a 122 HP electric motor.

The E-Class will be out at first in the standard sedan body styles and will be followed by an estate, long wheelbase sedan, coupe and convertible but we don't know the exact order. It is believed the regular sedan will go on sale in Germany in March 2016 so chances are a reveal will take place late 2015.