Can I Sell My Vehicle that Failed a Pollution Check? Any and every vehicle needs to clear the pollution test in this country before one sells the vehicle to another party as a failed smog test is an extremely serious situation in nearly all states in America. If your smog test results turn out to be failed, you should now have it checked by a mechanic to find out the problem. Once you are aware of the problem with your car or SUV, first thing - get it fixed before another pollution check can be carried out. A smog test [...]