Vehicle registration plates of Mexico Vehicle registration plates of Mexico Vehicle registration plates of Mexico are issued with unique visual designs by each state, but with a single national numbering system, such that serials are not duplicated in multiple states. Most states change designs approximately every three years, with each state having its own plate replacement cycle. Every year, owners of Mexican-registered vehicles pay the "tenencia" or "revalidación de placas" (car plates renewal tax). A set of Mexican plates includes one pair of plates, a windshield sticker, and in some states a plate sticker. The international code for Mexico is "MEX". In 2001 the size
Vehicle registration plates of Ecuador Vehicle registration plates of Ecuador Vehicle registration in Ecuador is composed of two parts. The plates are 154 mm high and 404 mm wide and are reflective in order to improve their visibility. The unique letter-number combination consists of three letters followed by three or four digits ranging from 000 to 9999. Formats in use are ABC-123 (old format) and ABC-1234 (new format). The word "Ecuador" appears in uppercase letters at the top of the plate. The first letter in the letter-number combination indicates the province of issue. The second letter, also called the "key letter", identifies the type of