The urban buses from Mercedes-Benz feature the impressive new BlueEfficiency Power engine line comprising six-cylinder in-line engines with a displacement of 7.7 and 10.7 l.In 2012 the Citaro was the world's first regular-service bus to meet the Euro VI emissions standard.Independent studies have shown that the Citaro comes in considerably below these limits in practical operation. Pollutant levels in its exhaust emissions are now so low that they have reached the limit of detectability.
The engines impress with their agile response and formidable power delivery combined with very smooth running. With further reduced engine speeds, the Citaro Euro VI operates even more economically, quietly and with a sound that is pleasant to the ear.Another example is the unique recuperation module: double-layer condensers called supercaps supplement the batteries by storing electrical power. This way, they aid the active battery-/alternatormanagement.
Lowered accesses, demand-controlled air compressor, electronically controlled compressed-air delivery and AdBlue injection without compressed air: all help to lower fuel consumption. At the same time numerous other measures have reduced the weight – despite complying with Euro VI, the Citaro's bodyshell is even more robust than previously and lighter into the bargainMoreover, it even saves fuel. In the autumn of 2012 the Citaro Euro VI demonstrated this in an extensive test. In the "Record Run Buses", fuel consumption under practical conditions was 8.5 percent lower than for the comparable preceding model, marking an impressive advance. Almost in parallel with the statutory deadline for the introduction of the Euro VI emissions standard at the start of 2014, today Mercedes-Benz is already handing over its 1000th Citaro model featuring Euro VI exhaust gas technology to a customer.