How many km/L is 40 mpg?

40 mpg = 17.01 km/L

It is 17.01 km/L, so saying 17 km/L is fine — rounding is within 0.5%.

And how many mpg is 40 km/L?

40 km/L = 94.09 mpg

Formula: km/L = mpg × 0.425144

22 mpg9.35km/L

24 mpg10.2km/L

26 mpg11.05km/L

28 mpg11.9km/L

30 mpg12.75km/L

32 mpg13.6km/L

34 mpg14.45km/L

36 mpg15.31km/L

38 mpg16.16km/L

40 mpg17.01km/L

42 mpg17.86km/L

44 mpg18.71km/L

46 mpg19.56km/L

48 mpg20.41km/L

50 mpg21.26km/L

52 mpg22.11km/L

54 mpg22.96km/L

56 mpg23.81km/L

58 mpg24.66km/L

60 mpg25.51km/L