Automatic transmission shifting is unpredictable. 1-2 and 2-3 gear shift will rev at high RPM and slam into gear. Merging into traffic or at any intersection where cross traffic does not stop is very dangerous as acceleration is non-existent until it slams hard into gear. The car has done this from 1st week of ownership. Besides safety issue, the transmission at this rate will not last long. This issue is mainly present when 1) cold or 2) after the car has sit for a couple days making it difficult for the dealer to act on anything. This is a very well known problem with 2010 Ford Fusion and now many people are complaining of this issue with the 2011 Fusion (not the sport model as it uses different transmission).

- Saint Louis, MO, USA

The transmission seized while traveling at 60 miles per hour, causing rapid deceleration while on highway. Shortly after coming to a stop on the side of the road, the transmission failed to engage, despite engine running.

- Farmingdale, NY, USA

The contact owns a 2011 Ford Fusion. The contact was on a steep incline and shifted the gear selector into the reverse; suddenly the vehicle rolled forward 6-8 feet. The contact engaged the brakes with force repeatedly before the vehicle came to a complete stop. The failure recurred when the contact shifted into drive, the vehicle traveled in reverse. The contact notified the dealer who stated that the vehicle functioned as designed. The manufacturer was not made aware of the problem. The contact was in the process of taking the vehicle to the dealer for diagnostic testing. The failure mileage was 1,800. Updated 06/16/11 the consumer also stated the engine would stall. Ford stated it was a normal operating characteristic of the vehicle due to the redesign of the torque converter. Updated 06/22/11

- Shirley , WV, USA

2011 Ford Fusion sel, . while driving on a cold start, pulling out of neighborhood (less than 1 block), car jerked forward, transmission would not shift, then shifted like you were on a washboard and jerked forward harshly while trying to shift into gear. This happened with less than 300 miles on vehicle. Numerous times thereafter, while car was driven for miles at high rate of speed, when driving afterward at lower speeds car would do the same. Example, driving back from Florida in North Carolina, caught up in a 4 mile long backup, stop and go traffic, while rolling forward without foot on gas to go a few feet, traffic cleared for about a block, put foot on gas to go forward, transmission again felt like it was on a washboard, tried shifting with a jerking motion and when it did, jerked hard before final shift. This also happens when I am rolling to a stop for a stop light, which then turns green before a full stop, put the foot on the gas and the same transmission problems occur. As of 4/20/11 I have just 2800 miles on this vehicle. Called dealership that I purchased car from and am scheduled to have it looked at. No indication from service advisor that they know anything about prior transmission problems that have been reported on the 2010. Had I known this prior to purchasing (after 20 years of no problems with Honda) I would not have purchased vehicle.

- Mechanicsville, VA, USA

2011 Ford Fusion sel I didn't drive the vehicle for two days when I started vehicle I pulled out in traffic I pressed on the gas pedal. The car revved to over 5000 RPM's, and didn't accelerate. The transmission slipped so badly that I almost got rearended by another vehicle. The car has 1400 miles on it, and it did this one other time when the vehicle was cold. This can be a very dangerous situation if you are merging or pulling into traffic. The first incident I thought that the transmission was adjusting to driving style, and it wasn't as severe. The vehicle seems to do this only when it is cold.

- Lake Worth, FL, USA

I bought a 2011 Ford Fusion on Nov. 26, 2010. The day I brought it home, the problems started. It bangs so hard into reverse that it feels like someone ran into the car with a bulldozer. It has dead spots in the acceleration, and often goes above 5000 RPM when shifting just going down a normal flat highway. The problems have gotten worse and more frequent and are completely random. It happens with a warm engine, cold engine, in rain, snow, sun, and even after being driven for 4 hours straight. I now have over 6000miles on the car and the dealership has done nothing because Ford won't authorize anything because the car is not "putting out any codes." They say they have never heard of such problems, but online forums have hundreds of the same complaints with 2010 Fusion. My fear is that the acceleration will fail when I am on the expressway or in heavy traffic or that my transmission will just fall out completely. This is my first new car, and I can't afford to get another one or a long court battle. Help! it's not just an inconvenience, it's unsafe.

- Flushing, MI, USA