The inspection of a SUV or truck at times requires more effort in terms of
locating certain emissions components during the visual portion of the smog
check. Large vehicles require more resources during the EVAP portion of the
smog check. Trucks and SUV often have larger fuel tanks then small and
mid-size passenger cars, thus requiring more nitrogen during the EVAP
inspection. Trucks and SUVs also place greater strain on the smog station's
dynamometer. The chances of damaging the dynamometer's bearings while
inspecting a heavy vehicle is greater. To recoup these costs smog stations
will at times charge more to perform smog inspections on large trucks and
SUVs.
posted by SmogTips Support
