Looks like the new Esprit is hit with the "negative grip" modifier.
Ever since FH4 there have been a few cars that have to have some sort of grip reducing modifier on them. With these cars no matter what you do they just don't grip like they should. The Rimac from FH4 is an example.
So far in FH6 the first one that I noticed was the 2011 Subaru STI. I've tuned this STI since FH4 for A class road racing since it's my IRL car and I love using it. It felt great in FH4 and FH5.
But in FH6 it wants to slide out in turns badly. I tune it like any other A class car in FH6 but it just doesn't want to grip. AWD, appropriate tires, still slides in turns.
The new Esprit is the same way. Its specs when tuned for A is just ok and the on paper specs for S1 are great. But on semi slicks it just slides during corners and won't stick to a line like pretty much every other car.
Even with AWD, full slicks, and full downforce the new Esprit just wants to slide out of the line during a turn. Tuned back down to A class with AWD and full aero and it still slides out.
Why the hell do they keep messing with cars like this? My best A class time on Soni time attack is 47.7 without a time attacked tuned car, it's just my general A class favorite. But the Esprit tuned to A class is at 49-50 because it just can't grip.