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Homologation

Car culture term

Homologation
Photo: Thesupermat / Wikimedia Commons · CC BY-SA 4.0

What is Homologation?

The process of building enough road-legal versions of a car to make a related model eligible to race in a given category.

Homologation is the approval process by which a car is certified to meet the rules of a racing class, often by requiring the manufacturer to build a minimum number of road-going versions. This requirement is meant to ensure race cars are based on genuine production models rather than pure prototypes.

To satisfy these rules, manufacturers produce homologation specials, limited-run road cars that share key components with their racing counterparts. These cars are often more extreme than the standard model, featuring uprated engines, aerodynamics and lightweight construction to maximise the racing version's potential.

Many of the most celebrated performance cars exist purely because of homologation, from rally specials like the Lancia Delta Integrale and Ford Sierra Cosworth to track-bred machines like the Maserati MC12. Their rarity and motorsport links make them highly collectible.

Related terms

Group BWRCCosworthGT3 RacingMuscle car

Frequently asked questions

What does homologation mean?
It is the process of certifying a car for a racing class, often by requiring a minimum number of road-legal versions to be built.
What is a homologation special?
It is a limited-run road car built to satisfy racing rules, sharing key parts with the race car and often more extreme than the standard model.
Why do homologation rules exist?
They ensure race cars are based on genuine production models rather than pure prototypes, linking motorsport to road cars.
What are famous homologation cars?
Examples include the Lancia Delta Integrale, Ford Sierra Cosworth and Maserati MC12, all built to go racing.
Why are homologation specials collectible?
Their limited production, extreme specification and direct motorsport links make them rare and highly desirable to collectors.

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