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Thought three turbochargers were overkill? Don’t tell BMW, which has reportedly unveiled a new 3.0 litre straight-six diesel engine that features – wait for it – four turbochargers, at the 2016 Vienna Motor Symposium on Friday.

According to Bimmerpost, the quad turbines – previously the reserve of the Bugatti Veyron – allows the oil-burning six-pot to churn out a nice round 400 hp between 4,000 and 4,400 rpm and a whopping 760 Nm from 2,000 to 3,000 rpm. For those counting, that’s 19 hp and 20 Nm more than the outgoing N57S tri-turbo mill that currently powers several M Performance models like the M550d, X5 M50d and X6 M50d.

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Twin smaller low-pressure turbochargers replace the previous single turbine, and join two high-pressure units as before. These are said to result in a more responsive, higher-revving engine, while also cutting cost – and they come with no additional weight penalty.

As previously reported, the new engine will see its first use in the new G11/G12 750d, replacing another application of the tri-turbo engine. Fitted as such, it will enable the 7er to sprint from 0-100 km/h in about 4.5 seconds, while also returning around five percent better fuel economy compared to the previous mill.