First service 1000KM, Second service at next 5000KM (1000+5000 on ODO).
Subsequence service subject to your driving and what kind of oil being used.

I just had a look on the schedule. Plugs alone cost RM200+, you might want to check again. Here's the few items that only apply at this 40k service: Coolant, Spark Plug, Pollen Filter & ATF.

1.6 don't have tweeter as well... not sure 1.8

1) Speedo Auto have it. You can buy the parts and get your own workshop install, or get install by Speedo. http://www.speedoauto.com/shop/product.php?id_product=330
I'm using this, one of the early mod I did for my HE.
2 & 3) Can be added by after market alarm system.

For 2012 spec, all 1.8 & 1.6 have no tweeter. 2013 should be the same, but pending confirmation.

2) the 3rd party alarm system will add brake lock function. Not sure if they can perform lock by distance.

If you meant stock system brake lock, only if we could modify the ECU. Local SC GDS cannot perform such mod. Probably those from Korea can. Or you can just add the brake lock module.
3) the alarm will beep when armed or disarmed (lock/ unlock door). Again, not sure if you can mod it to beep only with a buzzer, without adding alarm system. Haven't seen any owner did it.

u call that high? mine 7.8km/l leh!
i guess bad fuel consumption is still a synonym with korean car

NVH good, fuel consumption is OK if you dont tekan, great comfort