I know in the US the L means Litre (Liter!)
In the uk, we don't do the suffix thang... just 1.6, 2.3 etc..
A 1.6L would be the poverty spec model of a car here..
I have posted this before... the models go up from L.. eg Ford.. Low to High #-o
L, LX, GL, GLX, GLS, SPORT, GHIA, ST, RS...