The existing 2.5 dCi four cylinder engine hasn't been forgotten, however, and significant improvements will cement its position as the most popular engine in the range with improvements to both overall refinement and all aspects of its performance.

Subtle retuning has seen a useful 11 per cent rise in both power and torque figures to keep the engine at the top of the class. Power rises by 19 PS to 140 kW (190 PS) while torque increases by a healthy 47 Nm to 450 Nm.

As well as delivering performance gains, the changes have seen improvements in fuel economy and lower emissions. Over the combined cycle manual versions use 8.5l/100kms - an improvement of 1.3 l/100kms - while CO2 emissions have fallen by 40g/km to 224 g/km.