If I remember well was Wickey (or someone else) said, Volvos have the model number as start of VIN, at least for old ones.
And when they replaced the ending 4/5 by a 0, they kept the old system in the VIN. So a 740 wagon has the 745 code (as we currently list them on the site).
I do not know for the recent S/V/C+number though.