The Mercedes-Benz GLE 450 4MATIC EQ Boost as the first petrol model is powered by a in-line 6-cylinder (R6) engine systematically electrified with 48-volt technology. Its performance data: 270 kW (367 hp) and 500 Nm of torque, with a further 250 Nm of torque and 16 kW/22 hp available via EQ Boost over short periods. The Integrated Starter Generator (ISG), part of Mild Hybrid system, is responsible for hybrid functions such as EQ Boost or energy recuperation, while allowing fuel savings that were previously reserved for high-voltage hybrid technology.

The 48-volt on-board power supply serves not only high power consumers such as the water pump and air-conditioning compressor, but also the Integrated Starter Generator (ISG), which also supplies energy to the battery by means of highly efficient energy recuperation.

Mercedes GLE 450 4Matic consumes 9.6-8.3 l/100 km (combined) - Mercedes claims. I checked fuel consumption and fuel economy on a trip to check how Mild Hybrid system works. On this movie you have footage from every second of this real-life test.

Mercedes-Benz GLE 450 4Matic EQ Boost fuel consumption (economy) test in a city:    • Mercedes GLE 450 EQ Boost: city fuel ...  

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