Vehicle underbody components corrode excessively. Rear wheel well doors jam seals allow moisture to collect underneath them, causing paint bubbling and body rust. Have been fighting this recurring rust issue at the doors for three years now. Had the vehicle undercoated at Z-Bart in an attempt to extend the vehicle's life. I've owned a lot of vehicles in the salty north during my driving lifetime but never had one looking so corroded this quickly. I keep the vehicle clean and washed but can't fight poor corrosion resistant design and parts by the OEM. Vehicle shows corrosion equal to a car twice it's age.