2012 JAGUAR XJ Engine Problems

The engine has issues where there is a jerk while accelerating at times. I was told of a misfire issue that Jaguars have and have not been corrected. I was driving my 2012 Jaguar XJ on the interstate when it started slowing down. The engine light than appears on the dash and it starts to jerk as I try to speed up to get off the highway it goes from 60mph to 45mph. I take my foot off the gas and press the gas again for the car to jerk and accelerate slowly back up to 60mph. Not only was I almost hit from behind but almost crashed trying to get over and off the road for my safety and others. I was told by a mechanic the car needed a new gas treatment, fuel cap, and tune up all this money paid and no results. The 2012 Jaguar xj...

I HAVE SPENT THOUSANDS OF DOLLARS REPAIRING THE SUEDE LINING ON THE INTERIOR OF THE CAR. NOW, I CAN'T EVEN FIND ANYONE THAT WILL TOUCH IT! THE WOOD GRAIN HAS FADED AND THE VEHICLE IS GARAGE KEPT. THE HORRIBLE BUTTONS WERE MADE OF A MATERIAL THAT LITERALLY BECAME GUMMY. I SPENT HUNDREDS HAVING THEM REPLACED. SUNROOF HAD TO BE REPLACED/MOTOR MORE THAN ONCE, THE CLEAR COAT ON THE BACK PANEL OF THE ROOF HAS PEELED. I HAVE HAD OTHER CARS WITH ALMOST 200,000 MILES THAT HAD PERFECT PAINT WHEN TRADED. THE PAINT ON THIS VEHICLE IS TERRIBLE. THIS IS ONLY TO NAME A FEW OF THE ISSUES. I COULD HAVE PURCHASED A NEW VEHICLE FOR WHAT I HAVE SPENT ON THIS CAR. I LOVE THIS VEHICLE BUT MOST LIKELY WILL NEVER PURCHASE ANOTHER JAGUAR.

I TOOK MY CAR IN FOR AN ALIGNMENT. AFTER CHECKING UNDER THE CAR, THE MECHANICS REALIZED THAT THE COOLANT TUBING WAS MADE OF PLASTIC AND BROKE. THEY STATED THAT IF I DROVE THE CAR, I WOULD BE IN DANGER OF THE CAR SMOKING AND MAYBE CATCHING FIRE. I HAD TO REPLACE THE COOLANT. I WAS INFORMED THE JAGUAR HAS CHANGED THEIR ENGINEERING OF THIS RISK DUE TO THE NUMBER OF COMPLAINTS AND REPAIRS. I ALSO HAVE A 2012 XF AND IT HAS THE SAME ISSUE WITHIN THE SAME WEEK WHICH IS COSTING ME $2200 TO REPLACE. THIS IS A SERIOUS ISSUE IF THE COOLANT ISSUES RESULTS IS SMOKING AN POTENTIAL FIRE OF THE ENGINE.