NHTSA Complaint #11424129 — 2016 HYUNDAI ELANTRA

Anytime I hit a bump going at least 35 mph the back of my car jumps to one side or another. I've tried adding weight to the back of the car, less and more air in tires, new tires, but nothing seems to fix the problem. It has knocked me sideways on the roads and when on the highway or interstate it's gets worse as you are driving faster. Winter time I have to drive the least amount I can on the faster roads because it can get out of control. I read on hyundai forums that this has been a problem for this type of car. Some people said getting better shocks reduces the problem, but does not completely fix it. I'm worried I will get into an accident because of this. I can't afford to try new shocks, because it doesn't completely fix the problem. It is also wearing the tires much faster then they should. Consumer made several attempts to reach out to the manufacturer but no response. Vehicle has issues with rear end sliding back and forth as well as the rear axle.