It’s likely that many readers will have an OBD dongle through which they can peer into the inner workings of their car, but the chances are that most of us will have restricted our curiosity to the ...

A car heads-up display is designed to improve your safety by giving information at close to eye level, so you don’t have to look away from the road. Speed is the most common option, but some can also ...

CARS.COM — The original developers of head-up display technology for military fighter jets probably never thought their tech would be available for installation in a Volkswagen diesel wagon with ...

There aren’t too many car tech accessories that appeal more than a Heads Up Display (HUD). With OBD II becoming a standard across cars, it was only a matter of time before one could access plethora of ...

Once upon a time, you could diagnose the culprit of your Mazda MX-5 Miata's check engine light with a paperclip. We now use ...

Seeing your vehicle's check-engine light come on can throw a wrench in your travel plans. It can also feel a little scary: Does it mean your ride is headed for the scrapyard? Or is there a simple fix?

In the past, automotive diagnostic scanners were rather expensive. But today you can get a wireless interface for $10 online and use a multitude of apps to read codes, log, and monitor data in a wide ...

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 ...

This article was updated in November 2025 with new information. You know you’ve earned your DIY stripes when you can stay calm the moment something goes wrong. And with cars, that moment usually ...

The OBD-II scanner will display a five-digit Diagnostic Trouble Code (DTC). Depending on your scanner, these codes may be accompanied by a brief description of the problem that might not always ...