[2] The subclasses defined in R1 however have effectively merged and capacity of permitted turbocharged engines have increased to 1333cc.

[1] Rally5 rules are relaxed in comparison to the other Groups Rally formulae making it the most cost efficient and accessible.

Only the bodyshell (with safety cage), the seat mountings and the harness need to be homologated, the latter two already having their own Appendix J ruleset outside of Rally5.

Weight Capacity Cylinders Restrictor Gravel Asphalt Requirement Rally5 cars are placed in FIA 'RC5' sporting class alone.

Project of Suzuki Motorsport[11] In addition to the above, bodyshells (and safety cage) homologated in Group Rally4 since 2020 would also be accepted subject to meeting Rally5 criteria elsewhere.