My Fusion doesn't use any measurable/observable amount of oil over its regular 7,500 mile OCIs, but I still make it a point to check under the hood about twice a month.
While under the hood, I check the coolant level with a flashlight, check the trans fluid level and color, and just do a general overall inspection, to make sure that there's nothing odd going on. I also check the air pressure in all 4 tires at the same time, to make sure pressure is where it should be and there are no bulges, cracks, punctures, etc..
Then again, I drive about 600 miles a week, and I figure the car takes care of me, so I should take care of it. No surprises in the driveway means a lower likelihood of surprises on the highway.