A leaked circular from Land Rover's German head office to its dealers indicates the brand's headline SUV will soon see the introduction of 4.4l diesel power. The new 4.4l V8 engine is due in Land Rover’s domestic market by October, with full technical specifications supposedly planned for dissemination on 17 June.Statistically this new V8 engine outperforms the current 3.6l version (as you’d expect with the increase in swept capacity), but not by much. Power is up by 30 units from 200- to 230kW, with peak rotational force swelling from 640- to 700Nm – improvements of only 15%.Those increases in engine output trim the benchmark 0-100km/h sprint time from 9.2- to 7.6 sec, whilst top speed increases by 9km/h over the 3.6 V8 to 209km/h, primarily thanks to a new eight-speed automatic transmission.The real advantage of the new 4.4l V8 diesel is in terms of consumption and emissions, where it consumes only 10.2l/100km (10% less than the current TDV8) and emits only 264g/Co2 per km. Land Rover realises it must get the Range Rover’s CO2 emissions below the critical 200g/CO2 per km threshold. With this in mind engineers are currently busy preparing the next generation Range Rover for its Moscow motor show debut in August. In an attempt to trim nearly 500kg of mass (bringing the Rangey down from its current 2.7t weight) Land Rover engineers will integrate composite body panels and a new riveted aluminium chassis (mirroring construction techniques sister company Jaguar’s used on the new XJ) for the fourth generation model.