One problem related to manifold/header/muffler/tail pipe has been reported for the 2000 Mercury Cougar. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 Mercury Cougar based on all problems reported for the 2000 Cougar.
While driving 55 mph driver heard a loud knocking noise coming from the front. Driver noticed fluid leaking from underneath the vehicle. Driver took vehicle to a garage for inspection, and mechanic determined that intake manifold needed to be replaced.