this oooooooooold bug, when you spawn your car & nitro dont works + car drifts like shit if you try using nitro.
there are 2 easy ways to fix this bug temporary (untill carrespawn):
-damage your car 1%+ & resapwn car at disc = nitro back
-enter any interior & leave interior = nitro back
and for the note, i made smiler topic in 2016 about the same nitro bug https://archive.saesrpg.uk/community/topic/82385-saes-comunity-bug-fixer/
maybe, just maybe can fix it? @SAES-Developer