The check engine light has always been a bit of a gamble.Sometimes it’s a loose gas cap.Other times, it’s a four-figure ...

Apple can keep selling Apple Watches with its redesigned blood oxygen feature in the US after the ITC declined to revive ...

Your car’s OBD-II port is more than a check-engine light reader — it’s a gateway to understanding your vehicle’s health. With ...

CarMD, a leading provider of vehicle health data and technology, today released its 2026 CarMD® Vehicle Health Index™ report, ...

The average age of all vehicles on the road is rising, as are their ensuing repair costs. Today’s cars, trucks and SUVs are ...

Cold starts are the dirtiest moment—Bosch thinks it’s solved them with fire.

Don't let failing oxygen sensors compromise your engine's performance. O2 sensors are critical to emissions control on your car, SUV or truck. As the name implies, the O2 sensor (also called an ...

Oxygen sensors detect the amount of oxygen in the exhaust. Oxygen sensors usually don’t have a replacement schedule. A bad oxygen sensor can be diagnosed with a code reader or scan tool. A car’s ...

One of the most important measurements we make while tuning an engine is finding out what the actual balance of air and fuel was inside the engine. It doesn’t matter if we have a carburetor, port ...

For an engine to create propulsion, it first needs a few core ingredients. The process begins with fuel being pumped through the car's fuel lines and into the combustion chamber. This is where fuel ...

The world of car diagnostics has changed a lot over the last 50 years. Back in the '70s and earlier, a mechanic's most valuable diagnostic tools were usually their eyes and ears. You could figure out ...