Mazda’s new rotary engine made its appearance in the range-extender Mazda MX-30 PHEV in 2023 and is due in the US shortly. It ...

Q: My 2010 Subaru Forester needs a catalytic converter. The car has a California CARB-compliant cat. I live in Connecticut. Do I have to replace it with a California unit ...

Instead of dumping more fuel in to create the extra heat in the catalytic converter to burn off the oxides, Porsche is trying a different approach. The idea is to add more exhaust gas recirculation ...

The City of Mexicali has decided not to authorize Coca-Cola’s traditional Christmas caravan this year, following a request from Mexico’s president urging local governments to avoid promoting sugary ...

The first gallon of leaded gasoline was sold in 1923, and it wasn't officially banned until decades later. Why did the toxic ...