2020 Mercedes GLS – The S-Class Of SUVs. 2020 Mercedes-Benz GLS – Drive, Interior and Exterior. Color: Emerald Green. Subscribe.
The high aspirations of the new Mercedes-Benz GLS are likewise clearly apparent in its engine line-up. Powerful six and eight-cylinder engines deliver the motoring comfort and effortlessly superior power that suit the characteristics of this luxurious car.
Shortly after the model series launch, the introduction of the GLS 580 4MATIC will mark the world premiere of a new, electrified V8 petrol engine with 48-volt on-board electrical system and integrated starter-generator. It has an output of 360 kW (489 hp) and 700 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) 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.
ISG eliminates the need for a belt drive for ancillary components at the front of the engine, which reduces its overall length. The slim design of the in-line engine, together with the physical separation of intake/exhaust, creates space for close-coupled exhaust aftertreatment. The 48 V on-board electrical system 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.
The Mercedes-Benz GLS 450 4MATIC, a six-cylinder in-line engine electrified with 48-volt technology, is only available outside of the EU. 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 two diesel-engined GLS models are powered by the OM 656, the six-cylinder in-line engine from the current engine family. It is available with two ratings, depending on the particular market launch: as the GLS 350 d 4MATIC with 210 kW (286 hp) and 600 Nm and as the GLS 400 d 4MATIC with 243 kW (330 hp) and 700 Nm torque . In both versions, the powerful engine already complies with the Euro 6d- standard (RDE/Real Driving Emissions Step 2), which does not come into force until 1 January 2020 for new models and one year later for all vehicles, even in demanding driving conditions.
This is achieved with, among other things, an additional selective catalytic reduction (SCR) converter with an ammonia slip catalyst (ASC) in the exhaust tract of the GLS. This allows dosing of the AdBlue reducing agent that is even more closely aligned with the individual driving characteristics because any excessive ammonia surplus in the second SCR converter is broken down further. The AdBlue tank has a capacity of 31.6 litres. As before, refilling is convenient via a separate pipe behind the fuel filler flap.
In all variants of the new GLS, power is transmitted by the 9G-TRONIC automatic transmission. The broad ratio spread of gears one to nine allows a clearly perceptible reduction in engine speed and is a decisive factor behind the high level of energy efficiency and ride comfort. A transfer case with electronically controlled multi-plate clutch is likewise fitted as standard. This allows a variable transfer of drive torque from 0-100 percent (torque on demand) between the axles.
Also new, and available as an option, is a transfer case specially configured for superior off-road driving characteristics. In addition to the controlled multi-plate clutch with torque-on-demand function, it also features a reduction gear for off-road driving.
Also when driving on the road, and particularly when cornering, the two fully networked transfer cases with torque-on-demand function allow a further improvement in handling safety and agility by specifically influencing the degree of yaw to induce oversteer or understeer.
The GLS comes with the enhanced AIRMATIC air suspension system with Adaptive Damping System Plus fitted as standard. This setup uses highly complex sensor systems and algorithms to adapt the damping characteristics to the road condition and driving situation in real time. All components have been enhanced compared with the previous generation, and the wheel suspension mountings have been optimised to maximise ride comfort. In addition to this, the air suspension keeps the car at the same level, regardless of the load on board.
Even better ride comfort and agility plus new functions such as recovery mode are provided by the optional E-ACTIVE BODY CONTROL suspension, which is combined with the newly developed AIRMATIC air suspension. This is currently the only system on the market that can individually control spring and damping forces at each wheel. This means that it not only counteracts body roll, but also pitching and squat.