I've owned a CL9 since Oct 2015. And here is my experience:
1) 7-8 km/ltr
2) absolutely love it!
3) not good in my experience. Mine is a Type 24S with factory bodykit. I prefer to use my other cars in this respect
4) yes, it's not fragile, but ride is hard, at least with my 17" factory wheels
5) for me it has been pretty reliable and I don't see a high maintenance cost relatively speaking, and parts availability is good in Karachi
6) I never go beyond 1/3 hi octane and 2/3 regular. Infact I prefer its feel on 100% regular rather than 100% hi octane
7) it's been my daily driver ever since I bought it, but my fuel is reimbursed by my employer. It's fuel consumption is not good, I don't like its ground clearance, interior space is nothing extraordinary, ride is hard. So you make your choice