It depends on where you live. in malaysia, we call the 4th and 5th gen according to the model code (SM, SV) where as in the US of A, they refer it to the chassis code (CB, CD)
CA, CB, CD, CF/CG, CL/CM
3rd gen, 4th gen, 5th gen, 6th gen, 7th gen.
The reason for the CF/CG being not...