I was driving back from work in the evening and in my rear view mirror noticed excessive smoke coming out of my car's exhaust. I didn't notice the engine behaving differently, but I was fortunately ...

I have a 2007 Audi A4 Quattro with 90,000 miles. It seems to lose power on acceleration, and black smoke comes out of the exhaust pipe. The Check Engine light is on. Is this the turbo charger? Could ...

I rented a car from Avis for a quick 7-hour trip between California airports. I returned the vehicle clean, with no odors or damage. A week later, I received a $450 cleaning fee for a “heavy smoke ...