The use of SUV is very common for this kind of trucks, as a truck for the city. Fliers, TV commercials, manuals, etc. use this term, and I think if the manufacturer uses this acronym, it means it's the official word.
But you can use "todo terreno" in the same way. It depends on the distributor: Ford uses "todo terreno", General Motors uses SUV, and so on...
http://www.gm.com.mx/content_data/LA...let/index.html
http://www.ford.com.mx/vehicles/homeVehicles.asp
You could check the manufacturer and then visit the official page as in this examples.