BMW’s new six-cylinder diesel engine with two-stage turbocharging

BMW introduced a top-of-the-range two-stage exhaust gas turbocharged in-line-six power unit displacing 3.0 litres in autumn 2004, the first power unit of its kind worldwide in a passenger car. Apart from increasing specific output to 67 kW/ltr, this engine extends the useful operating speed range from the former 4000 rpm to almost 5000 rpm. The point most relevant to the customer in this respect is that this technology offers a standard of motoring performance so far achieved only with far larger eight-cylinder power units on fuel consumption in the EU test cycle of only 8.0 ltr/100 km or 29.4 mpg Imp.