the bug is in the ArcadeAssists component so it only occours with some of the cars.
the problem is that the code is converted from unity and in unity lerp function is clamped between 0-1 but it is not in unreal.
so the fix is to change the line:
float time = dt / (0.001f * mTorqueSplitterResponseTime);
to this:
float time = FMath::Clamp(dt / (0.001f * mTorqueSplitterResponseTime), 0.0f, 1.0f);