One problem related to engine rattling and whining sounds has been reported for the 2006 Honda Civic Hybrid. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Honda Civic Hybrid based on all problems reported for the 2006 Civic Hybrid.
2006 Honda Civic Hybrid (30,000 miles) has loud rattle noise going over bumps. Noise was diagnosed as engine mount cavitation by Honda engineer. Dealer tried repair recommended by Honda engineer consisting of placing o-rings between engine and mount. This eliminated the noise. 1000 miles later the right engine mount broke and engine dropped in frame. Dealer replaced right engine mount per TSB but noise still exists and now Honda is stating that the noise is a characteristic of the vehicle and refuses to repair. The noise was not present in the first twenty thousand miles of driving. The noise is now a very serious concern of another imminent engine mount failure. If this occurs at high speed and engine again drops in frame, control of the vehicle could be lost.