One problem related to manifold/header/muffler/tail pipe has been reported for the 2016 Volvo XC90. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2016 Volvo XC90 based on all problems reported for the 2016 XC90.
Very loud squealing noise started from engine bay while stopped at a light accompanied by a yellow check engine light. Noise would disappear under acceleration but return again off throttle. Dealer diagnosed as a failed �breather chamber� with the following comment: �if not repaired, faulty breather chambers can leak oil on other major engine components, including the exhaust manifold which could lead to a number of safety issues including fire. � the vehicle currently has 52,000 miles. I'm told this is a regularly occurring Volvo issue by mechanic friends.