Purchased my 2006 Mercury Montego in 2007. Car has always seemed to idle too fast. Car will suddenly lurch forward or backward, seemingly without provocation. I am fearful of my safety, safety of others or of damage to surrounding vehicles/property. Mechanics I have contacted have reset the computer, but the car always returns to the same issue after a day or so. Mechanics are baffled over this issue. It is almost as if the car has a mind of its own.

- Midland, PA, USA

Ac blows hot air when vehicle is not moving. If you are moving slow or stopped at a signal light or stuck in traffic the ac starts blowing hot air. It works fine as along as I am moving.

- Bryan , TX, USA

Engine revs up, and car lurches, typically when: Moving away from idle; - almost always when the wheels are turned all the way to the left or right and the car is moving away from idle. The lurching is sudden and "violent" enough that it can catch a driver unprepared - this has been an occasional problem for years - problem has been getting more frequent.

- Charlotte, NC, USA

I like my car except, except for being scared of driving on the freeway or trying to go up a hill and don't even think about passing someone. When the car's engine need to shift it will shift so hard it almost throw me into the back seat of another car or that is how I feel if I don't hold on to the steering wheel tightly. Their is something wrong with the transmission drive shaft or trans system and it needs to be recall. I just had to replace the upper roll retractor which was recalled on other Mercury cars except according to Mercury not my year or car... come on..... yes it's should have been a recall on my car as well. Question what to do....

- Saint Paul, MN, USA

1. any time the engine is on, but especially with the air conditioner on. 2. when shifting into gear (drive or reverse), the engine revs up to approximately 1300 RPM for approximately a second. If the brake is not firmly applied, the car lurches forward or backward 3. nothing yet; throttle body cleaning or replacement is suggested

- Chesterland, OH, USA

2 problems with car 1) transmission failed at less than 20,000 miles and 2) cylinder 5 failed at 30,000 miles.

- Huntington Bay, NY, USA