Mercury Montego gear slipping into neutral during acceleration and downshifting on hills on Mercury Montego

Some Mercury Montego owners report experiencing transmission gear slipping during acceleration, which can hinder proper acceleration. These issues are particularly noted in the 2005-2007 models, where the 6-speed automatic transmission is known for harsh shifting, especially when warmer than normal operating temperatures. Additionally, some owners find that their vehicle fails to accelerate despite increasing RPMs, indicating a likely transmission issue rather than an engine problem. There are also reports of the transmission not downshifting from 6th gear with slight pedal pressure, resulting in a shudder sensation. The average cost for inspecting these gear slipping issues is around $95, varying by location. It is essential for owners to diagnose these transmission problems promptly and seek professional assistance to avoid further damage.