2017 KIA OPTIMA Suspension Problems

My car is consuming major oil. I am having to put at minimum 3 to 4 quarts of oil every 3 days. I am having major loss of power. My car has oil fouled far too many spark plugs. In the last 3 months, I have had to replace the spark plugs three separate times. Within the last 3 weeks I have replaced the following: 1. Ignition Coils 2. Valve Cover Gasket 3. PCV Valve 4. 2 separate sets of spark plugs and 1 singular spark plug for Cylinder #4. My car is having a major oil consumption problem and the performance has been severely affected.

POWER TRAIN; SHIFT LOCK SPECIFICALLY: HAD TO USE THE RELEASE CONTROL MORE THAN ONCE. WHILE DRIVING WHEN IT HAPPENS, I FEEL A SURGE/ DECLINE IN ACCELERATION(SOMETHING I REQUESTED BE CHECKED A YEAR AND A HALF AGO, BUT KIA SAID THEY COULD NOT RECREATE MY DESCRIPTION).CONTINUES TO DRIVE BUT SLUGGISH TO ACCELERATE. ONCE I PUT INTO "PARK" I CANNOT GET IT OUT OF PARK EXCEPT TO USE RELEASE. IT DID RESET(?) WHEN I TURNED THE CAR OFF. SUSPENSION; FIRST FEW MONTHS OF OWNING THE CAR I PERIODICALLY HEARD A CREAK IN REAR SUSPENSION HERE AND THERE WHEN BACKING OUT OF DRIVEWAY/GUTTER SLOPE. HAVE NOTICED AN INCREASED CREAKING AND MORE BOUNCE WHILE DRIVING OVER TIME BUT HAVE NOT EVEN OWNED CAR MORE THAN 2 YEARS.