in car Satnav for 2012 Rav 4 and fuel economy.

[mcsonord]

Was there only one model of satnav in this generation rav 4 I have just bought? an online manual seems to have more functionality than mine. Is it possible to update/upgrade the satnav and audio system? if so How do I check what version I have and how do I go about doing it? ( if financially worthwhile).

Also I was wondering about the fuel economy on my automatic petrol rav 4 from 2012, it doesn't seem as good as a 2010 with the same engine etc, about 5mpg difference, for the same type of driving.

Any help on the above topics would be appreciated.

thanks

Matthew