Achievement Didn't unlock

[0_44JAX44_0]

This achievement should unlock after I won the race in magnus car and it didn't, now am going for the prestige events and I won't unlock this hard achievement to have some stupid * achievement like beating a race in magnus car be locked and am not gonna reset my journey because am not gonna refinish everything another time, if there was an option where I keep this profile and start a new game on a new profile then I would consider it and I won't be considering payback if the bugs in this one are not gonna be fixed  

[J_Kapa617]

So you completed Mangus' Challenge with his car (not just any race)?
Have you tried logging out and logging back into Origin?
The only issue I had with achievements was with the 'buy your first hot rod' where i bought the Ford but it didn't unlock the achievement, so I bought the Beck Customs F132 and it worked.

[0_44JAX44_0]

yea it was pretty much inevitable you have to do it to progress and then I finished the story so technically if you become the speed icon that one should be unlocked. And I did later finish the prestige events of speed style all on gold and still no achievement