As general parameter, it may tell you that weight that increases when a vehicle of these equals the weight of 4 people, which often does not become very noticeable. If you want to be more technical, the added weight is equivalent to 12% of the weight of the vehicle, which for the purposes of costs can estimate all costs to increase in a similar proportion. Finally, consider that his management style and the conditions in which it mobilizes, can make a difference even bigger in the vehicle wear, that the same shield as such.