Have you ever noticed a strange smell coming from your truck's exhaust or engine while driving or idling? It might seem harmless, but it could be a clear sign that something’s wrong. Odd smells are one of the earliest warning signs that your vehicle might be failing to burn fuel properly or leaking pollutants. In many cases, this means your vehicle could fail an emission test in Ontario . Getting ahead of the issue can save you time, money, and trouble. Ignoring the warning signs could lead to costly repairs or even tickets during roadside checks. Let’s go over what to look for, what those smells might mean, and why scheduling emissions testing near you could be the smart move sooner rather than later. What Is an Emission Test and Why Does It Matter? An emission test checks how much pollution your vehicle is putting into the air. In Ontario, commercial vehicles and many heavy-duty trucks must meet specific emissions standards to remain on the road. The test measures gases ...