Xsara! Even in unmodified form it should poo all over the AI in this race!
Seriously, its possible to win the race in a full tuned Mini with only 178HP.
Use T2 super-slick tyres, they should last the full 10-laps.
The AI seriously suck at Cote D'azur. (Try the Elise race for a prime example of this, a 5 Elise pile-up every time they pass through the bus-stop chicane after the tunnel!)
There's numerous places to make time on this track, a good line through the 1st turn is essential, don't touch the wall outside it or you'll lose time up the hill! The turn before the tunnel is also a key point, avoiding the wall on that turn will buy you a lot of time down the tunnel straight. A good line through the bus-stop will buy you 1/2s per lap if you get it right too.
Cote is a circuit that requires a setup like no other. Make sure you have max downforce (if you're cheating and using a car that has downforce!!) and run a few laps in free run arcade mode and fine tune your gears. Make sure if you're using the full racing transmission that you're getting into 6th gear before braking for the bus-stop. Again, a correct setup will buy you seconds per lap.
Try looking in the GT3 Tuning & Settings thread under "Best car for Pro FF" there's a ton of info that should help you out.
Look in the GTP Insider too, neon_duke wrote an excellent setting guide for FFs in one edition, it helped me out a lot.
The FFs are not to be feared, treat them well, & you'll be surprised how much you can conquer with them, I speak as someone who has won Rome Endurance race in a Mini!
Do you have a MAX drive or X-port? I can post some FF laps for you to use as ghosts if you like, that should help you to improve your FF skills. PM me if you'd like some more help. 👍