long with AC will be somewhere b/w 12 Km/L to 16Km/L
any auto fabric shop or poshish shops can make covers of your choice
the costs of any aftermarket depends on its quality, brand and your bargaining skills
I added two front door speaks of Kenwood, two at the back, a back camera and a 7" universal touch screen multimedia system. Back in 2016, totally cost including labor was 22000
11,000 for 7" multimedia system
2,500 for back camera (with some fancy desi night vision, no LEDs)
3000 for front speakers (desi kenwood)
500 for wooden slab (phatta)
4000 for rear speakers (desi kenwood)
1000 labor (guy was asking for 2000)
if you car doesn't have any heat up issues, you may turn off AC when you are start freezing lol! JK, cuore's Ac will never reach that point. Since normally, the AC auto trips after sufficient cooling is achieved and/or engine is overheating.
follow @muhammad.irtiza's thread for a very detailed info