One problem related to timing tensioner has been reported for the 2013 Hyundai Tucson. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2013 Hyundai Tucson based on all problems reported for the 2013 Tucson.
The engine was making an internal knocking noise. At first thought it was the timing chain and tensioner. It turns out that the noise is coming from the connecting rod bearings. According to the Hyundai dealer, the engine must be replaced. The car only has 78,500 miles and was purchased used in March 2017. The car has been well taken care of with regular oil changes as recommended. This seems to be common problem where metal debris, left over from the manufacturing process plugs up internal lubrication holes and the bearings do not receive proper lubrication.