My MKZ doesn't use a measurable drop in 10K miles with Mobil 1 5W-30. I don't recall it losing any either when it was still under warranty and I was using 5W-20 still. It's a hair short of 70K miles and a lot of those come in ~250 mile non-stop(or maybe 1 stop) interstate jaunts so it has plenty of opportunity to boil off(I hate to say "burn off") condensation and fuel.
The old British stuff is another story. The rings are pretty well shot on the MG so I get a lot of blow-by. I finally got some of the oil loss under control by repacking the oil/air separator in the crankcase vent with fresh media and also finally getting a gasket that fit and sealed properly(a long standing complaint on these engines, and someone finally figured out how to cut them correctly). As it was, I'd pretty much lose no oil running around at a max speed of 50-60mph, but as soon as I hit the interstate(4K+ sustained due to no overdrive currently) I'd lose a quart in 100 miles-and I'd see a lot of that in the form of oil droplets on the windshield and a WHOLE lot under the hood and out under the edge of it. I still get some blowing out around the oil filler cap and edge of the valve cover gasket(the former is vented and has its own combined filter and oil/air separator), but it's not as bad as before now that the factory designed vent functions properly. In fact, the summer before last when I was doing ~500 interstate miles a month in it going to club meetings and the like, I kept at least one 5qt jug of Supertech 20W-50 in the trunk, and at times even experimented with SAE 40 to try and keep things under control. With mixed around town and city driving down now, I can manage to add a quart every 500-1000 miles, which isn't great but is a lot better than what it was doing before. There is a partially disassembled short block in my garage now that's going to get bored, new pistons, and new rings and hopefully solve oil consumption as well as it can be solved on an old British engine.
The one that really baffles me-my future sister-in-law(finacée's sister) has a 2019 Jetta that she bought in late 2018. Her job involves both some short-ish trips(~15 miles of surface streets to the office) plus a fair bit of weekly out of office work that often has her doing ~30 minutes+ on the interstate each way. I think she's at around 20K miles, and it's using a quart every 2K miles. . VW insists this is normal. If it were mine, I'd bump it up a grade(spec is 0W-20, and I'd be inclined to try 5W-30) and even offered to change the oil for her, but she understandably wants to use the dealer as long as it's in warranty.