I found a round brown filter in my driveway when I drove back home after running errands.
Is there any chance this thing fell off my car?
I have a mechanic appointment booked next week for regular service and wonder if I’m safe just driving around until then.
OP, it looks like you’ve got your answer (wet/dry vacuum filter). But I just want you to know, it’s unlikely (essentially impossible) for a filter to “fall off of a car”. The car’s engine filter is encased in a plastic enclosure that would have to be taken apart. This filter is in the engine bay. It also is flat, not round like this (normally).
The only other air filter is the cabin filter. It’s even more difficult to get to and is inside the car (usually behind the glove box). It’s also flat, not round.
Thanks so much! If I ever find myself in the situation of discovering another mystery filter under my car, I won’t immediately panic that the car is falling apart.