Your next pocket travel guide
score:3
A quick look at some Mexican auto dealers' web sites shows them using km/L. Examples: 1 2
Upvote:2
In Colombia Km/US Gallon is used.
Source: http://www.carroya.com/contenido/clasificar/Chicas_famosos/top_carroya/20111/ARTICULO-WEB-PTL_NOTA-9968965.html (in spanish).