Talk:RR3 Wiki:Upgrades Strategy For 100% Completion/@comment-26808586-20160812031656/@comment-27048832-20160819172850

Numbers works for newly added cars where no upgrades are present

After obtaining said car the +/- comes into play with strategy for final PR required in series often being -1 or -3 Engine, I personally find it easier to remember that a car needs all but one upgrade than a 7 digit code (which I'd need to check on the cars page to see what that code is) then bring in the factor that not every car has the same number of upgrades within each branch the 7 digit code becomes more complicated