This case highlights how tightly emissions compliance is tied to the software and hardware in a modern vehicle, and why you ...

As the global focus on climate change intensifies, emissions regulations are becoming a pivotal force in shaping the future ...

Mazda has a neat idea for what is basically a CO2 diaper that could be part of combustion-engine exhaust systems.

Inrecent years, independent research has helped clear up many myths within the Pontiac hobby. One area, however, that still remains shrouded in mystery is the midyear emissions system change that ...

Mazda’s mobile carbon capture device already shows promising results, and is ready to be integrated into future models.

In addition to indicating a possible problem, smoke from the tailpipe means dirty emissions. Most states and some municipalities mandate periodic tailpipe-emissions testing. If your car is emitting ...

Catalytic converters are an important part of your car's functioning exhaust system. Here's how they work and why their parts ...

Defeat devices are used to fool modern automotive safety systems and emissions testing. However, new laws are being written ...

We may receive a commission on purchases made from links. Modern cars are designed to be more efficient and eco-friendly than ever. Automakers build vehicles with a wealth of advanced features to not ...

Most of us grew up with gas caps. Getting your driver's license and learning how to pump gas is a rite of passage for many in the U.S. — and a big part of that is twisting off the gas cap or at least ...