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 ...

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 ...

We would expect a car that has been serviced according to schedule to pass an emissions test, but there are number of issues that could cause it to drive normally but be outside of the emissions ...

If you're due to get your vehicle tested for pollutant emissions, the process is now a bit easier in the Milwaukee area: the state's Department of Transportation just installed two self-service kiosks ...