Exhaust into Cabin & Fluttering Noise During Acceleration

Hi Members

2015 Prius Tech Sedan, 387,000 km (240,000 miles) Calgary, Alberta Canada

I was experiencing a fluttering noise when accelerating 2-3 weeks ago, and then 4-5 weeks later, exhaust leaking into cabin when car was idling, cold days.

Mechanic found rear and front exhaust gasket leaking and replaced them both. No more smells inside cabin and no more fluttering noise.

Thank you.

 

Correction 2-3 months ago, fluttering noise