Hi Mihaela,
After doing research and also attending a VDA 5 training session earlier this year, i believe that it is only possible to do VDA 5 MSA study using software and not a excel spreadsheet. Software that is advised to be used is Q-Das but you can also have a look at Visual X-Sel.
VW, BMW and MB advised to use VDA 5 and not AIAG MSA rev 4.
Let me know if you need more info.
Marguerite Vockerodt