MUNICH – Alongside a raft of design changes, Jaguar has also introduced a high-tech diesel powerplant as part of its 2012 model year XF line-up. Given our affinity for the larger displacement 6- and 8-cylinder engines this model plays host to, it’s fair to say that Jaguar has really put the cat among the pigeons (it had to be done) by slotting a four-cylinder diesel into its executive saloon. Does this bode well for the XF or is this tantamount to having its claws removed?