Wa Alaikum Us Salam,
A1: You can verify production date on its Seat Belt Label stitched at lower base of Seat Belt.
A2: Anyone who has access to auction database, usually car dealers have their active accounts and they can do it, since it is a paid service with some security deposit, therefore you will have to ask someone.
A3: Even if it is 2 KM driven you should always inspect Imported Car as it could get damaged while transportation, but verified auction sheets will tell you car condition at the time of auction, usually these are pretty trustworthy.
A4: Sensing is an advanced feature, while other are its variant, let me explain you a bit in detail:
FF Comes with Model / Chassis # Initials like "DAA-RU1"
AWD is a 4 wheel Drive Version & it comes with Model "DAA-RU2"
FF Comes with Model / Chassis # Initials like "DAA-RU3"
AWD is a 4 wheel Drive Version & it comes with Model "DAA-RU4"
Then it comes to cosmetic changes, Which are listed hereunder base grade is at first:
Hybrid Z is the most recommended and commonly available variant in Pakistan as well as in Japan
Now comes to SENSING, unfortunately mostly dealers here don't even know the exact features and usability of Honda Sensing, therefore they don't recommend it, in my earlier post #924 I have explained in detail about Honda Sensing, please have a look at that. It is a worth spending to opt.
A5: Base Model is G
A6: Honda Vezel 2015 Hybriz Z Honda Sensing with 8,000 Km driven and un-registered should be somewhere around 3.2 - 3.4 million rupees.
Please make sure it is sensing one, as it will have steering controls for Adaptive Cruise Control (ACC) & Lane Keep Assist (LKAS) on right hand side of the steering wheel, additionally it will have buttons for Collision Mitigation Breaking System (CMBS) and Lane Departure warning etc on right side of the dash: