My 2020 Acura TLX 2.4L:
I was leery of the 36.8 mpg fuel computer calculation I've received over the past 7,200 miles until I did my own calculation of the last tank of Shell Premium used for 490 miles of mixed suburban and highway driving: 37.8 mpg. It clicks as high as 40 mpg during a 60 mph cruise. I believe this K24 motor truly likes top tier premium from Shell. And I only use 5w-20 full synthetic, not 0w-20.