Mercedes replaced the 2-liter OM 654 diesel with its newer OM 654 M evolution and introduced the 48V mild hybrid system on the Mercedes GLE 300 d 4Matic and Mercedes GLE 300 d 4Matic Coupe. Consumption decreased by 1.1 l / 100 km.
Mercedes replaced the 2-liter diesel engine OM 654 with its evolution OM 654 M (M from modified) in the Mercedes GLE/GLE Coupe range.
The new diesel OM 654 M has an increased displacement from 1950 cc to 1993 cc and a new crankshaft. At the same time, the injection pressure has increased from 2,500 to 2,700 bar. For low emissions, the OM 654M has a NOx catalyst, particulate filter and two SCR catalytic converters.
Mercedes says that at its launch last year in May, it was the world’s first diesel with integrated starter generator. The engine is equipped with the second generation of integrated starter generator. The ISG includes the 48-volt electrical system.
Compared to the old OM 654 which develops 245 HP/4200 rpm and 500 Nm/1600-2400 rpm, the new engine develops 272 HP also at 4200 rpm and a maximum torque of 550 Nm/ 1800-2200 rpm to which are added 20 HP and 200 Nm from the integrated starter generator.
Although the power and torque were significantly increased, fuel consumption was reduced from 7.2 to 6.1 l /100 km on the GLE 300 d 4Matic. Also, the acceleration from 0 to 100 km/h is only 6.8 seconds, 0.4 seconds faster than the former model and the top speed is 230 km/h compared to 225 km/h before.
The price of Mercedes GLE 300 4 Matic with the new engine starts from 75,053.50 euros while Mercedes GLE 300 d 4Matic Coupe costs 79,182.60 euros. The new models will be available in the showrooms from November on.
The same OM 654 M engine but with 265 HP and 550 Nm combined with mild hybrid technology on 48V is also found under the hood of the new Mercedes C 300 d 4Matic.
Subsequently, the OM 654 M motor with mild hybrid technology on 48V will be introduced on the next generation GLC / GLC Coupe starting in 2022.
Having an enormous power for a 4-cylinder 2-liter engine there is a possibility to be offered also on the S-Class, which also had in the past a 2-liter diesel with 4 cylinders that developed at that time only 204 HP.