The contact owns a 2017 Jeep Renegade. The contact stated while driving 60 MPH, there were severe misfires in the engine which could be associated with the vehicle jerking, and then jolting forward while going uphill. The check engine warning light had been illuminated for almost a year and the oil light was frequently illuminated. The contact stated that the vehicle was experiencing excessive oil consumption. The vehicle was driven to an independent mechanic where it was diagnosed with ignition cylinder compression failure, and the engine consuming an excessive amount of oil. The local dealer was contacted; however, the vehicle was not repaired because the vehicle was not under recall. The manufacturer was made aware of the failure. The failure mileage was approximately 119,747.