BMW's flagship 7 Series range is to be offered with its most powerful diesel engine ever in the 740d model, while the popular 730d now comes with a revised powerplant offering improved fuel economy and emissions figures.
These models can be ordered immediately for delivery from September.
The new BMW 740d heralds the latest technological leap for the 7 Series, taking diesel performance in a luxury car to a new level.
Powered by a twin-turbocharged engine, which produces 306hp, the BMW 740d provides the driver and its occupants with a smooth yet suitably rapid method of transport, while merely sipping at its fuel tank.
The engine features an all aluminium crankcase and third generation common rail fuel injection system offering 600Nm of torque from just 1,500rpm.
This enables the 740d to achieve a class-leading zero to 62mph time of 6.3 seconds before going on to an electronically-limited 155mph top speed.
These impressive performance figures have been made possible by the unique way the twin turbochargers work.
A smaller turbocharger provides near instantaneous response for swift initial acceleration before a larger unit provides additional thrust from the mid-range to the redline.
However, courtesy of 'Efficient Dynamics' technology, the new 740d still achieves an outstanding 40.9mpg on the combined cycle and a CO2 emissions figure of just 181g/km.
