Manifold/header/muffler/tail Pipe problems of the 2016 Kia Motor Sorento

2016 kia sorrento lx with the 2. 4 engine with 54,000 miles is using 1 quart of oil per 400 miles. The tail pipe is emitting an oily black soot. While driving, an engine ticking noise alerts us that the oil is low. At this rate we will have replaced all the oil with 18. 5 quarts of oil before the scheduled 7,500 mile oil change. The mechanic at the portland oregon area dealership is trying to tell us this is normal. The vehicle is currently involved in their oil consumption test loop, like so many others. I smell a rat.

While passing, sudden loss of all power. The check engine light came on. From that point on, very low power. When I got home, there was a fairly loud engine knock and oil coming from tail pipe. Took car to independent shop who diagnosed the issue as rod knock. Had the car towed to kia dealer who then said it needed a new engine. Only 82,000 miles on vehicle. Kia covered the parts and labor to replace. When the shop dropped the engine, they noticed the drive splines on both the awd transfer case and transmission were both rusted and all teeth sheared off on the fwd side of the spines. Rwd still intact. Kia would not cover neither would the extended warranty company because of the rust. That is a sealed unit with multiple rubber gaskets. How could it possibly have rusted? this is a major design flaw as there should been adequate heavy lubricant as well as sealing to prevent these parts from rusting. New transmission required $1800, and new transfer case would have been another $2500. Chose slightly used unit for $1000. It took almost 8 weeks to resolve. Now car is leaking oil on to exhaust. Back to dealer it goes. . .

2016 kia Sorento. Consumer writes in regards to vehicle will not shift properly and failed to accelerate over 30 mph. The manifold assembly intake was replaced three times.