Q: I have exhaust coming into the cabin via the air vents, and much more when the vehicle is stopped. Air filter or leak somewhere?

asked by on March 30, 2017

I have exhaust coming into the cabin via the air vents, and much more when the vehicle is stopped. Is the problem more likely to be a clogged air filter (I haven't had it cleaned / replaced before) or a leak in the exhaust system? Does the fact that it's stronger while stopped indicative of anything?

My car has 140000 miles.
My car has an automatic transmission.

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