Hyundai Sonata 2018

2018 Hyundai Sonata: what owners report

• On the 2.0 and 2.4 Theta II engines, machining debris from crankshaft production can starve the bearings of oil, leading to knocking and, in bad cases, a seized or holed engine.2011–2019
• Excessive oil consumption is a recurring US complaint: it is among the worst problems for 2015 cars, and about half of the visible 2018 owner reviews mention topping up oil.2015–2018
• Three 2018 US owners describe poor dealer or Hyundai handling of their oil-use complaints; one reports an oil warning light that stays on and one repeated limp mode.2018
• In the US, eligible 2011-2019 cars get a lifetime engine warranty extension once the knock-sensor detection software update has been installed.2011–2019