New Mercedes-Benz GLS is Mercedes-Benz's largest and most luxurious SUV and, above all, offers more: more space, more comfort, more luxury. The confident presence of its exterior stems from its impressive dimensions, which are even larger than those of its predecessor (length 77 mm, width 22 mm). One of the benefits of the 60 mm longer wheelbase is interior spaciousness, especially in the second row. The three fully electrically adjustable seat rows offer all passengers a generous amount of space and outstanding seating comfort. The seats in the third row can be lowered into the floor to increase the boot space (up to 2400 litres), while the seats in the second row fold flat. Furthermore, a six-seater variant with two luxury individual rear seats in the second seat row is available for the first time. Celebrating its world premiere in the GLS 580 4MATIC (combined fuel consumption: 10.0-9.8 l/100 km; combined CO2 emissions: 229-224 g/km)[1] is an electrified V8 engine featuring EQ Boost - a 48-volt system with integrated starter-generator.
Powertrain: all petrol engines have integrated starter-generator and EQ Boost
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 (combined fuel consumption: 10.0-9.8 l/100 km; combined CO2 emissions: 229-224 g/km)[1] 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.
Diesel: six-cylinder engine for Europe, Russia and other markets
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 (combined fuel consumption: 7.9-7.6 l/100 km; combined CO2 emissions: 208-200 g/km)[2] and as the GLS 400 d 4MATIC with 243 kW (330 hp) and 700 Nm torque (combined fuel consumption: 7.9-7.6 l/100 km; combined CO2 emissions: 208-201 g/km)2. 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.
4MATIC all-wheel drive: agile on the road, superior when off-road
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.
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