Mercedes admitted they had supplied information about the front and rear brake ducts of their 2019 car, but this was allowed because these were not listed parts at the time.
The FIA decided that the front brake ducts of the Racing Point were legal as, although they had been copied from Mercedes, they had been used on the 2019 car.
But a rule change between 2019 and 2020 added brake ducts to the category of so-called “listed parts” that teams have to design themselves.
Stewards found that Racing Point had used computer design data legally supplied by Mercedes to Racing Point in 2019 to design their rear brake ducts with “minimal changes” and fit them to their 2020 car.
As the parts had not been used on the 2019 car, they were not permitted to be used in 2020, because they were a Mercedes design, not Racing Point’s, and had not been an integral part of last year’s car.
The FIA said that had Racing Point asked whether they could use the 2019 Mercedes rear brake ducts on their car this year, they would have been told they could not. But they did not ask whether this was allowed.
so if they’d used the rear ducts last year, it would be OK?