New D5 twin-turbo diesel engine features 205 hp and 420 Nm of torque. The engine has much improved fuel-economy and performance over the previous D5, with mileage of 6.2 liters/100 km for the full-sized S80 sedan.

Volvo has released full details of its new 2.4 liter D5 diesel engine which will go under the bonnet of the brand's flagship model, the S80.

The Swedish automaker claims that this engine is completely new, sharing only the D5 badge and cylinder-block with the previous power plant. The new D5 is now Euro 5 compliant and offers more fuel efficiency than the earlier D5.

Twin turbo-chargers and piezoelectric fuel injectors create a torque-suffused pull across the rev band with the new D5 churning out 205 hp (at 4000 rpms) and 420 Nm of torque (between 2900 and 5000 rpms). The D5 is made out of aluminum, which dispenses heat more evenly, and temperature control is improved with a new transverse-cooling technology.

The efficiency numbers are impressive too, with CO2 emissions at 164g/km and fuel-economy of 45.6 mpg (UK), or 6.2 liters/100km, for the full-sized S80 sedan.

The D5 took 3 years to develop and it is meant to keep Volvo competitive in the premium brand segment, where automakers are continuously improving fuel-efficiency through new technologies.


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