To convert X liters/100km to Y mpg: Y = 235.3 / X e.g. X = 14.1 liters/100km Y = 235.3 / 14.1 = 16.7mpg (I agree, that's low for the I-5) BTW, 235.3 = 3.786 (liters/gallon) * 62.14 (miles/100km) Peter '93 90csq North Wales, PA