Heyho, since I want to switch from the Golf IV to a bigger car, I looked at some Mazda 6 type GG1 on the Internet. Preferably as a combo. Now I have a few questions about the Mazda 6. Does this one have a computer on board (consumption, kilometers, time, door a,b,c,d still open) as I know it from the Gulf? Because I would hate to make a bigger step backwards in terms of technology. The second would be the radio. I like optically, but has no USB. is only unfortunately not in the form as I know it. Is there certain mounting frames to be able to transport even normal radios into the shaft? Finally, what do I have to pay attention to when buying? I heard the rust precaution at the Mazda should not be so good. Are there places where the rust especially likes to collect? Thank you in advance Greetings Watzke