general problems of the 2013 Nissan Altima - part 2

Well I have noticed that I have a bad vibration and grinding noise between 1,200 and 1,800 rpm's worst at 1,500. This happens no matter what speed. I have brought it in to the dealership 2 different times for this and they tell me this is normal. I am sorry but when a transmission is vibrating or making bad noise's like this it has something wrong with it. I believe this is contributing to my very poor gas mileage. Also while from a stop and accelerating I have had my car surge and have no power while trying to accelerate. This has happened three times and 2 of the times I had a car come up on me fast becasue I was not able to accelerate. This can be a big safty issue.

The advertised miles per gallon on the highway is 38. I get 27 mpg on the highway. I drive almost exclusively highway miles and my mileage has never been over 27 mpg. This car is a rip off and not well made.

When coasting from a low speed (45-55) to near stop the transmission "locks up" while nowshifting. The vehicle violently locks up, so bad that it feels like you've hit something. The steering wheel is also affected to the brute force. Nissan issued a mandatory recall transmission reprogram which I promptly had done to the vehicle. However, just this Friday, 5/3/13, the transmission again did this. Both times I was lucky that I was on back roads with little to no traffic and that I was able to maintain control. This is a serious problem that in the wrong conditions (ice/snow/rain) or when oncoming traffic is coming could get someone killed. I can't explain just how violent the downshift is, other than to say the first time my 6 year old began crying in the rear seat because he thought we wrecked, and that the 2nd time my cell phone was jarred from a very rugged cradle.

When turning my car cut off a few different times and you can hear a pop noise when turning coming from the right tire,I took may car to Nissan I was advised that they couldnt find a code and didnt no why it cut off, and didnt hear the noise, or feel the slack in the steering wheel, my car was there at 7996 miles and out at 7996 miles which means no one test drove the car to even try to see what was going on they did a so called dianogtic which the check engine light didnt even come on. And I was told they drove my car to see what I was talking about. 4 months later it do the same thing but being that they didnt do what they said the first time I didnt take it back. In 12/14 it did it again while getting on and off the freeway and coming to a stop took it to Nissan and was told I needed a air filter which was changed 2 oil changes before this happened. Took it home and it cut off many more times, now 4/15 it did it again but worse sitting in traffic it cut off and everytime I start it and put in drive it cut of but will go in reverse and it jerk really bad, and when it do go its hesitate and when smashing on the gas it takes a long time to go then takes off when it decides to. I contacted Nissan consumer affairs and was advised they were going to call to where I take my car to 3 days later I get a call back and was advised to call Nissan and go have a dianogstic, like it was set up. When I asked for the name I was giving that consumer affairs was talking to she didnt have a clue to what I was talking about, when I called the lady I been talking to at consumer affairs I didnt get a answer nor a call back. But im sure they will not find anything wrong with my car due to no one will drive it to see what it do. Im scared to drive my car due to it may stop and someone can hit me or being that when smashing on the gas it take off when it want to and I can hit someone.