First of all, many thanks to Mr Loh for his great service. Finally I've gotten my Forte 1.6SX..among the last of its batch

Enjoying my ride..no regrets!
However I hope to get some advice from fellow Fortezans here regarding some issues:
1) There is some rattling sound coming from the passenger door behind the driver's seat. Have yet to determine the exact part that's rattling.. I've come across many complaints of dashboard rattling..but I can't really find any pointers regarding this "rattling" of mine.
2) On navigation, the radio reception keeps disappearing on and off, especially when nearing/making a turn. Any way to prevent this?
3) There is a something that looks like a paint chip on my rear left door

Don't know if it's there from the beginning..anyway what's the best remedial action for it? Attaching a pic...

4) Have yet to finish a full tank, but FC seems horrendous at the moment! 100% city drive, 1600cc: now averaging 11-11.5L/100km, but the fuel gauge seems to be dropping disproportionately (feels more than 12-15L/100km! Is it normal to have such high FC in the beginning? Or is it going to improve after 1st service? Or am I delusional?
Hope to get some advice from the experts here!

2) It's because the navigation system is giving the voice command, but the volume is too low/muted. Increase your navigation system's volume the you'll hear it 'talking'