When my car failed California’s smog test this year, I wandered from one garage to another trying to determine how to bring it into compliance. After speaking with several automotive experts and ...

If you live in a place that requires emissions tests, here’s what to expect. Many, or all, of the products featured on this page are from our advertising partners who compensate us when you take ...

Emissions testing has become a hot topic in the '90s and will continue to generate more interest as testing is enforced nationwide. You can count on it. For those rodders who have never experienced a ...

SMOG checks or emission tests exist due to the U.S. Environmental Protection Agency's (EPA) regulation on passenger vehicles. Each state sets limits of nitrogen oxides (NOx) from emitting past certain ...

I am about to buy a 1998 Volvo S90 with 133,000 miles on it. The smog sticker is expired. The seller tells me it’s only $40 to get a new one. Is it possible that it won’t pass the test? What would you ...

Q. I retired a couple of years ago and only drive my ’06 CTS about twice a month. When I took the car in for the smog test, it failed. The reason was the vehicle was “not ready.” I was in disbelief.