Porsche, Mercedes-Benz, McLaren, Ferrari are strongly committed in these competitions that help their prestige. Two classes are defined, GT1 and GT2. In both classes, race cars must be based on a production model offered in at least 25 units. The difference between the two is that GT1 allows technological improvements in the racing version which is often identified with the Evolution or Evo wording.
The industrial challenge is so important that the organizers are tolerant for some interpretations of the rules. Mercedes-Benz has its CLK GTR approved in GT1 before the completion of the production model. Porsche goes further by developing its GT1 specifically for racing, the commercial model being no more than a consequence required from the rule.
The considerable interest in these competitions brings a very rapid change of the models, somehow hard to follow at Porsche that puts too many cars under the generic reference 911. In 1996, the first 911 GT1 version is based on the chassis 911(993) which will also be used in 1997 for the 911 GT1 Evolution. In the following year, the 911 GT1 Evolution will be a very different car built on the 911(996) chassis.
These frequent changes have a consequence that each specific model is a rarity. On May 14 in Monaco, RM Sotheby's sells a 1997 Porsche 911 GT1 Evolution, lot 261 estimated € 2.7M. This car with a successful racing career is the only Evolution specimen from this model to have also been made road legal, confirming by its example that the qualification of Porsche in GT1 was less usurped than what its competitors wanted to denounce.
SOLD for € 2.8M including premium