Recreational Vehicle Lpg Tank Valve/gauge problems of the 2008 Nissan Rogue

The gas gauge is not working properly. I have researched the issue and found multiple complaints of Nissan owners with the same problem. Below are some of the issues we recently purchased a 2008 Nissan Rogue and noticed that the gas gauge is off. Even with a full tank of gas, the gauge will read the tank as below the full level. At times it will show the tank as 3/4 or 1/2. Other times it will show the tank at a full level when it shouldn't be, for example, 85 miles driven on a full tank of gas. I would think that should register at least one notch below the full level. It will constantly go up and down on the same tank of gas. Has anyone else had these issues? I am having the same problem. I fill up the gas tank and it only reads 3/4 tank. I have taken it to the dealer 3 times. The last time they admitted there is an issue with the sensor. They replaced it, now I fill it up and it only reads 1/2 a tank. And it never said when it was low on gas, my wife ran out of gas on the interstate and it still said she had 1/4 tank. They say they will replace it again. My awd Rogue was purchased new in 2008. Wife drives it exclusively. December 2011 mileage turned 16,000 and gas gauge level failed to register full on fill-up. Now at 16,500 miles and have to fill tank to over-flow level to assure it's full. Contacted dealer since there is a TSB on issue and quoted $888. For sender/sub-sender unit and labor. Filed a complaint with nthsa on 1/9/2012. Registered complaint with Nissan north America. Nissan states: there is no active campaign or recall for this problem. Will never buy another Nissan. This is a defect and warrants a recall.

After driving 2. 5 - 3hrs of highway driving would not accelerate (increase in speed ). I have been in intersections and the car would not accelerate which is a very serious safety concern. I have to travel to alabama and florida several times each year from my home in south carolina and this has happened when trying to pass large16 wheeler trucks or just keep up with traffic flow. To do this when traveling at speeds of 65 - 70 miles per hr. Has concerned me, it is a serious safety matter. It could easily cause a serious crash and death. On a resent trip(July /2015) to alabama on I-65 traveling at speeds on 70+ my car started to decelerate to down it was near 50 miles per hour, I pulled off highway and turned my car off. I have checked to make sure it is not over heating, which it is not. The temp. Gauge is below the half mark and the rpm gauge will not move past 2. 5. Also, on this trip I noticed that any slight hill going up it would have trouble pulling and start to decelerate then once I got up this hill it would accelerate to 80+ miles per hr. I have read quite a few complaints on this site concerning the same things are happening when traveling long highway trips . This must be taken care of by Nissan before someone dies or seriously injured.