Well I typed
20 miles per gallon in km per liter into Google and this what it said....
12.94966 kilometers per liter equals 36.58 miles per Canadian gallon.
About 2.35 miles per gallon.
11.9 kilometers per liter = 28 miles per gallon.
22 (kilometers per liter) = about 51.75 miles per gallon.
25 miles per gallon is 10.6285927 kilometers per liter
45 miles per gallon = 19.13 kilometers per liter.
45 miles per gallon = 19.13 kilometers per liter.
10 (kilometers per liter) = 23.52 miles per gallon.
22 (kilometers per liter) = 51.75 miles per gallon.
30 miles per gallon = 12.75 kilometers per liter.
9.6 (kilometers per liter) = 22.56 miles per gallon.
15 km/L equates to about 35.282 miles per gallon.