What Car? Q&A - Whose X-Trail CO2 figure is right?
A: The amount of carbon dioxide emitted by the Nissan X-Trail will depend on the engine size and whether it has a manual or automatic gearbox.
In a sense, both figures that you quoted are correct for the 2.0 dCi 148 engine. However, the figure of 190g/km applies to the manual version, while the automatic version produces 216g/km.