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 ...

Car diagnostic tests scan a car’s components and integrated systems for errors or malfunctions before they become dangerous. These tests leverage computerization to keep your car in optimal working ...

Q: I have a 1989 Ford Ranger that's driven less than 1,000 miles a year but comes in very handy at times. Last night I had driven it about 12 miles, and the "check oil" light came on. I checked the ...