unregistered used car?? seems legit :-p
u hv yrself ruled out every possible option.. the cars u hv mentioned , 5 yrs limit and a budget of 9-11lacs..
honda city 2006 - 2008 can b looked for .. i would advise u to go for a non cng one , running an engine made for petrol on cng will damage it and will require ca$h to be maintained/repaired/spare parts replacements (specially injectors) in the long run , i.e. > 80,000km
if i was u , i would go for
either :honda city 2000-2003 model
----------would find it for 5-6lacs
rs50,000 for restoring the body , complete denting and painting
an engine swap vtec engine for fuel eff
around rs100,000 for other costs
- would get the car done under 10lacs
A TIME CONSUMING PROJET! and a questionable reliability of the vehicle
or : an import / JDM
compromising on looks , but a reliable and long lasting product