Author Topic: Exhaust smell from heat (car)  (Read 260 times)


  • Magnum Stache
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Exhaust smell from heat (car)
« on: December 12, 2018, 04:04:25 PM »
I have a 2013 Ford C-Max Energi (plug-in hybrid) with 44,000 miles on it. I bought it in 2016 and it has always had an annoying smell when the engine turns on while the heat is running, a lot like gasoline. I most notice it when the electric heat is running and the engine then turns on. The smell dissipates pretty quickly.

For some reason this hasnít seemed like a problem until now, but thinking about it now I feel like itís probably not a good thing to be breathing that, and I confirmed on the model ownersí forum that itís not standard behavior.

Does anybody have ideas what could be causing this?
« Last Edit: December 14, 2018, 12:31:52 PM by ShoulderThingThatGoesUp »


  • Magnum Stache
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Re: Exhaust smell from heat
« Reply #1 on: December 13, 2018, 04:54:40 PM »
Might want to specify it's car related, not indoor furnace related.

I've got a Volt and I'll get some funky smells off the engine if it hasn't run in a while.  It clears quickly enough, and it's apparently moderately common, so I don't let it worry me too much.  Apparently it's just road grime and other stuff burning off the exhaust.