Next stop: green city.
The climate protection officer.
As the new measure of sustainability, it even clearly outstrips its predecessor, the Citaro CNG with the OM 447 hLAG engine, in demonstrating Mercedes-Benz’s technological capabilities. One of the world’s largest bus and coach manufacturers has every reason to put in a self-confident appearance at Europe’s biggest bus and coach exhibition – the Citaro NGT is considerably quieter than its counterpart powered by a conventional diesel engine, which already represents a benchmark in its own right for quiet running and noise emissions with the proven OM 936. The new natural gas engine with the designation Mercedes-Benz M 936 G raises the bar still higher, however – with its displacement of 7.7 litres it is one of the most compact natural gas engines around. And with its weight of 747 kilograms it is no less than 25 percent lighter than its successful predecessor – downsizing par excellence, as the single-stage turbocharged engine boasts impressive power delivery which measures up admirably to the performance of its large-volume diesel-powered counterpart.
The clean machine.
At the same time, the new Citaro NGT with the smaller OM 936 G engine achieves fuel savings of up to 20 percent in comparison to the Citaro CNG. Lower fuel consumption means lower emissions – when running on bio natural gas, the Citaro NGT is even virtually CO2-neutral. And it goes without saying that the Citaro NGT undercuts the Euro VI emission limits - markedly so in some areas.
In contrast to diesel or petrol, the high-quality compressed natural gas is particularly environment-friendly, containing virtually no pollutant-forming constituents and burning virtually free of any residues and with a zero net impact on the environment. Sulphur oxide, soot and other particles are practically undetectable in the exhaust gas.
Despite its outstanding economic and ecological merits, the Citaro NGT declines to make a fuss about its performance capabilities and goes about its business unobtrusively. So unobtrusively that it now gets by with an extended service interval of 60,000 kilometres. Mercedes-Benz ensures such low-key servicing requirements with a unique trial and testing procedure, taking in winter tests in Scandinavia, summer trials in the Sierra Nevada (Spain), high-altitude testing at more than 2400 metres above sea level, endurance tests and countless other measuring and test drives. The three trial vehicles have clocked up more than 130,000 kilometres prior to the Citaro NGT going on show with a commitment to reliability in Kortrijk
The beaming new recruit.
The changes have not all taken place under the bodywork, however. While the Citaro NGT clearly remains true to the line embodied by its predecessors, the new bus from Mercedes-Benz is nevertheless recognisable as a distinct model in its own right. The greatest difference is without doubt the striking cover panel on the roof, under which the newly developed gas cylinders produced in a composite material are concealed.
Meanwhile, nothing remains concealed from the driver: with its new LED main headlamps, the Citaro NGT is not only quieter and more energy-efficient than its predecessor, it also presents itself in the best light at all times – just like the road ahead of it.