Use UK gallons, you get another 20% distance for every gallon
.
My mpg records for my
'06,
'10,
'14, overall averages 51.74 (43.08 US), 48.89 (40.71), 51.63 (42.99) respectively.
Wife's 2 litre diesel Audi A3's overall average 50.82 (42.32). Weighs a lot more, carries up to five people in air-conditioned comfort, good performance for a "family car", range of over 500 miles, quiet, no buffeting, a lot more visible on the road, no chance of getting wet when it rains, doesn't fall over in gravel parking lots, can carry several suitcases of clothes, tyres last for several 10s of thousands of miles and are cheaper than motorcycle ones, service interval: 19000 miles, just had one done, total cost including picking up and delivering, full valet, repair of puncture by six-inch nail (that I didn't know it had): £320 ($512).
So, which do I prefer to use?
I feel sad
.