After the Styrian Grand Prix, Renault lodged a formal protest against the legality of the RP20, suggesting its brake ducts (a part teams must design themselves) may be too similar to the Mercedes W10's.[10] Brake ducts of the RP20 were impounded and stewards requested Mercedes provide brake ducts from the W10 for comparison.[11] Renault also made an identical protest to the results of Hungarian Grand Prix regarding the RP20's legality.[12] The same protest was repeated by Renault at Silverstone following the British Grand Prix.[13] Ferrari submitted a request for clarification by the FIA on the same grounds as the Renault protest.[14][15] The FIA upheld the Renault protests, fining Racing Point €400,000 and deducting 15 points from the Constructors' Championship.[16] It stated that while the car complied with the technical regulations, the design process of the rear brake ducts constituted a breach of the sporting regulations.