I can understand that it's not intuitive for you, but for me it's all the way round, so it's just everybody's bias according to different cultures btw, moving

I can understand that it's not intuitive for you, but for me it's all the way round, so it's just everybody's bias according to different cultures btw, moving between unit is simple math: 35 MPG: ------- 35 miles ... 1 gallon 100 miles ... x gallon = 100 * 1 / 35 [gallon] -> ~2.86 gallons/100 miles .. and, look mom, no math! 10 L per 100 KM: ---------------- 10 l ... 100 Km 1 l ... x Km -> 10 Kms per liter .. which now that you think.. made sense for "10L per 100Km", isn't? that's the power of MKS