Mercedes has launched a completely new 4-cylinder 2.0 liter diesel engine family code name OM 654, which will replace the former OM 651. How stands the new Mercedes E 220 d against competition BMW 520 d and Audi A6 2.0 TDI?
Mercedes produced diesel engines with a 2.2 liter displacement since exactly 40 years. It was the OM 615 in 1976 which had an output of 59 HP from a displacement of exactly 2,197 cmc.
Five generations were produced between 1976 and 2015, from OM 615 to OM 651. The last one was OM 651 with a displacement of 2,143 cmc offered in three power versions: 136, 170 and 204 HP the last two with twin stage turbocharging.
Mercedes presented in Detroit with the occassion of the new E-Class launch the new 2.0 liter OM 654 diesel engine family.
We know that two versions will be offered for the moment:
E 200 d with 150 HP
E 220 d with 195 HP/400 Nm
There are no informations about a more powerful version but we expect a successor for the 204 HP/500 Nm used in the former E 250 d to compete with the BMW 525 d which can delibver around 225-230 HP.
For the time being we make two comparisons, one with the former 2.2 liter 170 HP version and with the competition engines.
The new 2.0 liter 195 HP promise a 3.9 l/100 km fuel consumption (102 g/km CO2 emissions), 0.6 l/100 km less than the old 2.2 liter diesel which need 4.5 l/100 km (117 g/km CO2 emissions). This results is even more impressive if we count that the new engine has 25 HP more, while the torque is the same at 400 Nm.
Looking to the competition, both Audi and BMW are offering a 2.0 liter diesel on 520d and A6 2.0 TDI.
BMW 2.0 liter diesel engine develops 190 HP and 400 Nm while the fuel consumption is 4.5 l/100 km (119 g/km CO2 emissions). By comparison, BMW needs 15% more fuel (all data are for 8 speed automatic gearbox because Mercedes offers only automatic version). We do not have yet the performance data.
Audi A6 2.0 TDI develops 177 HP and the same peak torque of 400 Nm like BMW and Mercedes. With 7 speed double clutch gearbox, Audi announce a fuel consumption of 4.2 l/100 km (102 g/km CO2 emissions).