Sports cars, GTs, and production sedans from 1940 to 1954 are eligible. Some models of these cars, built after 1954, will be accepted if they are essentially identical in terms of technology and aesthetic components as specified in the Regulations.

All production sedans from 1940 to 1954 with original bodies and D.O.H.C. in-line 6-cylinder and O.H.V. V-8 engines, as well as O.H.C. and D.O.H.C 4-cylinder engines.

Mass-produced and limited-produced sports cars, prototypes and/or reproductions authorized by the Organizing Committee from 1940 to 1954 or similar with original bodies and/or made of the same material and with original or open engines up to 2000cc (122″ cubic) for mass-produced cars.

All mass-produced and limited-production sports cars, prototypes and/or reproductions authorized by the Organizing Committee from 1940 to 1954 or similar with original bodies and/or of the same material or a contemporary substitute authorized by the Organizing Committee and with original engines or from the same family greater than 2,000cc (122″ cubic) and open up to 5,000cc (305″ cubic), unless the original displacement was greater.

Grouped here are cars of the same make, model, and year as those that participated in the original Carrera Panamericana from 1950 to 1954. The car's appearance must be original, with only modifications and upgrades to some systems permitted to improve safety without affecting the original appearance.
Likewise, all cars that comply with Appendix “K” and possess an “FIA HTP” (Historic Technical Passport) within the “E” period from 1950 to 1954 or similar will be accepted by the Organizing Committee as long as they comply with current safety requirements.

All mass-produced and limited-production cars from 1955 to 1975 and later models, cosmetically and mechanically identical to those previously authorized by the Organizing Committee, regardless of country of origin.
Cars included in Appendix "K" of the FIA ​​International Sporting Code equipped with original 4-cylinder engines and original bodies are also accepted.

All mass and limited production cars from 1955 to 1975 and later models, aesthetically and mechanically identical to those from 1975 previously authorized by the Organizing Committee, regardless of country of origin.
También se aceptan los autos incluidos en el apéndice “K” del código deportivo internacional de la FIA equipados con motores de 4 cilindros originales al igual que con carrocerías originales y un límite de 2,000cc (122″ cúbicas) de cilindrada o con motores modernos 4 cilindros con desplazamiento máximo de 2,000cc (122″cúbicas).

All mass-produced and limited-production cars from 1955 to 1975 and later models, cosmetically and mechanically identical to those previously authorized by the Organizing Committee, regardless of country of origin. Cars included in Appendix "K" of the FIA ​​International Sporting Code, equipped with original 6-cylinder engines and original bodywork, as long as they meet current safety requirements, are also accepted.

All mass-produced and limited-production cars from 1955 to 1975 and later models, cosmetically and mechanically identical to those previously authorized by the Organizing Committee, regardless of country of origin. Cars included in Appendix "K" of the FIA ​​International Sporting Code, equipped with original 6-cylinder engines and original bodywork, as long as they meet current safety requirements, are also accepted.

All mass-produced and limited-production cars from 1955 to 1975 and later models, aesthetically and mechanically identical to those from 1973 previously authorized by the Organizing Committee, regardless of country of origin.
Cars listed in Appendix "K" of the FIA ​​International Sporting Code equipped with original 8- and 12-cylinder engines and original bodywork are also accepted, provided they meet current safety requirements.

Todos los autos de producción (sedanes) de 1955 a 1975 con carrocerías originales y motores O.H.V. de 8 cilindros en V.
Todos los autos de producción masiva y limitada de 1955 a 1975 y modelos más recientes estéticamente, sin importar el país de origen.
Para poder inscribir un auto en esta categoría, es necesario que el Comité Organizador apruebe su registro.

Eligible are Porsche GT2, GT3, GT4 sports cars.

These are all vehicles that do not fall into any of the nine competition categories listed above ("Pan American Car Group" or "Historic Car Group"); however, the Organizing Committee allows their participation without scoring points or qualifying.
Without exception, all cars and their modifications are subject to approval by the Organizing Committee. Participants must submit their vehicle's Technical and Safety Card to the Permanent Secretariat for review of eligibility.
The original fuel tank must be replaced with a safety tank (fuel cell/fuel safe) with a capacity of no more than 83 liters. The use of electric fuel pumps is permitted.