Long range car diagnostics

Hello, I am new to Arduino, but already have a project in mind.

Is it possible to make remote car diagnostics at really high range, like hundreds of km.

I suppose that cloud service should be used as well, as the range is really long but haven't thought this yet.

Thank you in advance!

It really depends on 100s of kms from where.
Do you want this project to work anywhere or just in specific locations?
Mobile satellite internet is the only way to provide universal coverage, but its expensive.

Thank you for the swift response.

Actually i need it from anywhere, i mean within a country, from every spot where internet connection can be found.

Vanko:
Thank you for the swift response.

Actually i need it from anywhere, i mean within a country, from every spot where internet connection can be found.

You are referring to cell phone service, are you not? Most other internet connections are not where cars are allowed.

Paul

Is this just for your car or for a fleet?

There's lots of commercial systems out there. Usually sold for trucks as tracking the health of a truck fleet is worth money for the owner.

I think Cadillac cars have had a system like this (using cellphone data service) for many years.