Engine Burning Oil problems of the 2013 GMC Terrain - part 2

The contact owns a 2013 GMC Terrain. The contact stated that the vehicle experienced excessive oil consumption. During an oil change, the technician diagnosed that the oil was a quart and a half low. The vehicle was taken to the dealer where a technician performed an oil consumption test. The technician stated that it was within normal operating range. The manufacturer was notified of the failure. The failure mileage was 51,155.

There are several issues with this vehicle which makes me think this car was a lemon, unreported by original owner, or in a flood; 1st, the rear hatch struts were totally rusted out and inoperable (reinforcing my flood thought. ) 2nd, the vehicles mpg is nowhere near the advertised 22/32 - I mentioned my concern several times to the service dept, the sales man, and the certified sale manager; their solution - they reset the gauge on the dashboard! 3rd, within days of my purchase, I noticed a knock under my car that sounded like an axle was going to bust through my floorboard it was knocking so hard! after numerous service repair attempts & visits back to the dealer, one visit lasting approximately 7 days, they think they've fixed the problem. Secondary fuel tank fuel pump module - (contributing to fuel consumption issue?) 4th, the windshield wipers stopped working while I was driving to work, in the fast lane, @ 6am one dark, rainy morning, during a torrential down pour almost causing a major pile up! 5th, check engine light, stumbles and misfires on acceleration, shuts off when stopped at a stop sign or traffic light. Repaired/several hundred dollars later. 6th, the continuing issues have been, but not limited to reduced engine power, rough idle, engine sputters, hesitates, poor gas mileage, & excessive oil consumption. 7th, another check engine light, now fuel-injectors need replaced (another contributor to fuel consumption issue?) . After further review of the vehicle's cpo paperwork, this is not the certified vehicle being referred to on the paperwork. There are items checked off on the report that do not apply to this vehicle. I would have never overpaid for a cpo vehicle had I know their "rigorous standards" meant absolutely nothing! I have bought many cars in my life, both new and used cars and never had any of the issues I am having with this vehicle!.