An owner from Stoughton, MI, wrote in, “Whenever I come to a complete stop while my vehicle is in drive, the RPMs idle at a dangerously low level. But owners are experiencing problems and lodging complaints.Īlso, there are numerous complaints of limited engine power and hesitation. No engine recalls have been published for the 2015 model – yet. Hyundai recalled 2011-2012 models for the problem in 2015, then issued an identical recall for 2013-2014 models in 2017. Chunks of bearingmaterial then contaminate the oilingsystem, causing complete engine failure When this happens, the connecting rod bearings are starved of oil and fail. Metal debris inside the engines – left over from the manufacturing process – plugs up internal lubrication holes. The Theta II powerplants are well-known for unexpected, catastrophic failure. ![]() These units are referred to as the “Theta II” family of engines. ![]() The majority of the problems are with the 2.4L four-cylinder and the turbocharged 2.0L. There were four different engine options offered in the 2015 Hyundai Sonata.
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