2017 Kia Forte

MY CAR BEGINS RANDOMLY SHAKING. I HAVE HAD ALL MAINTENANCE DONE AT THE KIA DEALERSHIP AS PER MY WARRANTY SPECIFIES. THE LAST 4 WEEKS, MY CAR WILL RANDOMLY SHAKE VIOLENTLY WHILE IDLE, ATTEMPTING TO ACCELERATE IN THE DIFFERENT DRIVE MODES. YESTERDAY, JUNE 21ST, 2018, MY CAR STARTED SHAKING VIOLENTLY AS I WAS PARKED AT THE FOOD CITY IN CHATTANOOGA ON OOLTEWAH RINGGOLD ROAD.I WAS ON FACEBOOK VIDEO MESSENGER WITH MY FRIEND EATING A MCCHICKEN. I DROPPED MY SANDWICH AND IMMEDIATELY POPPED THE HOOD. UPON OPENING, I SEE THE ENGINE SHAKING VIOLENTLY AS BEFORE. MY FRIEND WITNESSED IT AS WELL. I IMMEDIATELY CALLED KIA MOTORS CUSTOMER SERVICE. THEY CALLED ROADSIDE SERVICE TO TOW THE CAR BACK TO THE DEALERSHIP IN CLEVELAND, TN. TODAY, 6/22/2018, KIA CLAIMED THEY WERE UNABLE TO DUPLICATE THE ISSUE AND BLAMED BAD GAS. EVEN THOUGH THE SHAKING HAPPENED UPON RETURNING HOME. MY CAR HAS CONTINUALLY DONE THIS EVEN WITH ME USING SHELL, BP, OR 100%GASOLINE. KIA REFUSES TO GIVE ME A FAIR PRICE FOR TRADING TO ANOTHER CAR. THE ENGINE ALSO TICKS. I ASKED ABOUT THIS AT THE TIME OF PURCHASE ON JAN 13TH, 2017 BY THE SALES ASSOCIATE MATT HAKE AND WAS TOLD IT WAS NORMAL, EVEN THOUGH THE TICKING AS INTENSIFIED.

THE VEHICLE IS THE S MODEL, NEW FOR 2017, I HAVE DRIVEN THE CAR APPROXIMATELY 2,000 MILES SINCE LEASING IT IN SEPTEMBER 2016. THE CAR HAS POOR ACCELERATION, ESPECIALLY GOING UP HILLS AND MERGING INTO TRAFFIC (MOVING, CITY). IT HESITATES AT TRAFFIC SIGNALS (FROM A DEAD STOP). THE VEHICLE TENDS TO SWAY SIDE TO SIDE FROM TIME TO TIME (MOVING, CITY), THE VEHICLE IS UNDER WARRANTY AND HAS BEEN LOOKED AT BY TWO DIFFERENT KIA DEALERS. A TECHNICIAN HAS RODE ALONG WITH ME; FELT MY CONCERNS, BUT CANNOT DUPLICATE IT. I WAS TOLD IN MARCH 2017 THAT THE COMPUTER HAD BEEN "TWEAKED", BUT NO FURTHER INFORMATION.