I'm just learning about the oil consumption issue with the 2.4 L engines, which I was told my dealership's service department has been a common issue.
I am about 6-7 months into my lease of a 2018 Jeep Compass. I have just about 4,100 miles on it and in no way would say it is a severe duty vehicle. I don't tow, off-road, or ever carry any heavy cargo. Last Thursday while driving (and in motion) my car stalled in the middle of taking a left hand turn across the opposite lane of traffic and I had to coast to the other side of the road. My dash started flashing with different instructions (shift to park then shift to desired gear; and then press brake and press start button). It look about 5-6 tries in total before I could get my jeep to turn back on and the engine was cranking just trying to turn over. I brought it to my dealership the next morning and was told I was low 3.5 qts of oil. I couldn't get an explanation as to why it would have consumed that much oil in such a short amount of time apart from that "it's a known issue" with the 2.4 L engines. I didn't have any warnings before my car turned off, no oil light, no notice that my oil was nearing the end of its life; again though, I was told no lights would come for this problem until you pretty much have no oil left in the engine.
I was told that until I reach 7,500 miles, the jeep is still considered to be in a "break-in period" and that it might over-consume oil until that period is over. They also won't start an oil consumption test until the break-in period is over. I was advised by the service department to get my first oil change at 7,500 miles and that they're start the consumption test at the point but then I'll still have to bring it back 2 more times after that (every 2,000 miles) before any repairs may be considered.
I still have 3,400 miles to go, which is pretty close to what I've already put on the jeep at this point. I've owned new cars in the past (Hondas) and I've never had to monitor oil levels in a brand new car. Hell, I didn't even have to start doing that with my old Toyota until it was 14 years old. I was really excited to get this jeep but I would have passed on the 2.4 L engine if I had been made aware of the "known" problem. I'm just thankful I wasn't hit when it stalled out on me in the middle of the road..
I have a 2006 Jeep grand cherokee. In 13 years, it didn't burn a single drop of oil but I still checked it oil at least once a month since I got it. It a good practice to check the fluid levels (oil, coolant, power steering fluid, etc) of the car at least once a month.
It is no ways your fault but checking the fluid levels can and will save you a lot of headaches down the road because, in case something is damaged due to lack of a certain fluid, if the particular fluid has a level indicator, the owner is responsible for the damage (as owner is responsible to check and maintain proper levels of such fluids). For example, 2nd gen compass doesn't have a fluid level indicator for the transmission, so if that leaks fluid and the tranny blows, jeep will have to fix it as long as car has warranty, since you have no means of knowing checking it. However, if you blow the engine the same way, they can deny warranty service and claim it was owner negligence. Some people say easity way of doing it is after filling up the gas. While that is happening, you can check the oil in 30 secs.
You did the right thing by asking for an oil consumption test. Definitely ask them to do that once proper mileage is reached. That way the the issue will be on an official file and if you have more problems down the road, you will have an official reference.