If you've seen bottles of AdBlue at filling stations and wonder what it's for and whether your car needs it, our guide will tell you everything you need to know. Picture the scene: you're in the queue ...

what on earth is that? The chances are, if you don't know what AdBlue is you — or more specifically, your car — won't need it. Newer diesel engines are fitted with equipment that converts ...

Meanwhile, Mazda created an engine so "clean" it doesn't even need AdBlue. The Mazda CX-60 with a diesel engine does not have the SCR system on all markets, that is, the selective catalytic ...