The fuel consumption of a commercial vehicle is an important reason to buy – and in practice it gives rise to discussions with the customer. Especially if the driver claims that the vehicle is consuming too much. In such a case, the workshop is initially dependent on the customer’s records. However, experience shows that driving your own consumption – with full refueling and long enough journeys under real conditions to be able to make a qualified statement – is very time-consuming. This can be done more easily, more precisely and more comprehensibly with a special consumption meter, such as the test device specialist Leitenberger has with the ‘KVM 2012’ in its program.