The combined cycle figure is a totally achievable 5.1 l / 100 km, with 119 g / km of CO2 emissions. (drivemag.com)
But in real world driving conditions it is a rather different story, with overall consumption that is close to the Panamera Diesel, which now returns a combined cycle figure of almost 45mpg. (autocar.co.uk)
The Vitara should go a long way on a tank of diesel too, if you get anywhere close to the official combined (average) test cycle figure of 70.6 mpg for the 2x4 model — or the nearly as impressive 67.2 mpg for the 4x4. (autoexpress.co.uk)