Mercedes-Benz covers the heavy-duty and medium-duty segments for trucks and buses with two entirely new engine ranges. The inline engines with four and six cylinders range from a capacity of 5.1 litres to 12.8 litres and a power from 115 kW (156 hp) to 375 kW (510 hp). They all share state-of-the-art technology, featuring four valves per cylinder, a cross-flow cylinder head, double overhead camshafts, common-rail injection, high combustion and injection pressures, exhaust gas recirculation, SCR technology with AdBlue injection and particle filters. And add numerous technical tricks to the mix. The result is also common to them all: low fuel consumption, maximum endurance under continuous operation, the highest reliability, long maintenance intervals, easy maintenance, outstandingly smooth performance, impressive thrust and a fantastic driving experience. Another impressive feature is their longevity: 90 percent of the engines achieve a mileage of 1.2 million kilometres (OM 47x model series) or 750000 kilometres (OM 93x) before requiring an overhaul. The new BlueEfficiency Power engine generation by Mercedes-Benz thus combines the highest standards of economy, environmental compatibility and performance.