Sony Xperia Z5 won't charge in car USB

[AC Question]

I just unboxed the sony xperia z5 and while it works when plugged in into a laptop and wall charger, there's no charging in the car's direct usb port charger or when plugged into a cigarette lighter charging port either.

 

[rotatingfan]

mine does the same thing.
any ideas people??

 

[venkatesh s1]

Which make of music system u r using in car?

 

[AlphaTango414]

Are you using a 2.1 amp or above charger?