Well people, as per the discussions at the forums for last one year,
Decision to take car up to keil is a bit tricky.
It is certainly reachable by any car but it just depends would you risk damaging your bumper/side skirts etc or not.
You can reach there without damaging anything but you never know.
As for Sharda,
One can go there without any problem on ANY car.
The naala and few bad patches require some care and patience but nothing serious.
Sharda to keil track is defined mostly muddy/rough on the forums,
I will be able to confirm it as soon as i am back from there.
Planning to go there on 7th may and will be back by 11th may inshaAllah.