Know Your Smoke
Your Ficha Técnica either green (older style) or blue (newer style) is an important document that tells you lots of information regarding your vehicle and when it was built. If I am checking your vehicles service requirements and intervals, ordering parts or checking specifications for diagnostic reasons, I will need the information from your Ficha Técnica.
It holds information about the date the vehicle was built, registered and even if it was shipped from another country. It will also give me the VIN (Vehicle Identification Number) or Chassis number. I can get the engine code for the specific engine and parts I would need to repair your vehicle. I can even see what size tyres your vehicle should have and ensure that it passes the ITV with all the correct parts.
Needless to say, I will not share this information with anyone other than suppliers and people helping me to fix your issue.