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In recent days, the implementation of the National Technical Standard on emissions for automobiles, especially those using ...

Driving a well-maintained, regularly serviced automobile is the best method of passing an emissions check, but what are ya, some kind of square? If you don’t have a newer car, check out the tips below ...

For millions of Americans, regular emissions tests — sometimes called smog tests — are part of vehicle ownership. Thirty-one states and the District of Columbia have at least one county that requires ...

In keeping with last month’s theme of testing multiple products rumored to have the same effect on vehicle performance, we’ve got our sights set on emissions this time around. Vehicles in most of the ...