Well, I'll weigh in. My 2013 FR-S, with 21,000 miles, uses less than a 1/2 qt. of oil (0w20) in between oil changes (every 7 months or 7,000 miles).
However, I've never tracked it, only hit the rev limiter a couple of times (once in a heated race with a soccer mom in a mini-van) and I have the shift light set at 6,200 rpms.
Pretty exciting - huh -
humfrz