The Renault Formula One team on Sunday lodged an official protest against Racing Point for the third successive race following the British Grand Prix.
In a statement after Lewis Hamilton's record seventh home victory, in his McLaren, the British-based French team repeated their protest questioning the integrity and originality of their rivals' RP20 car.
"We confirm that Renault DP World F1 Team has submitted a request to the stewards of the event for clarification on the legality of the Racing Point RP20," said Renault in a statement.
"We have no further comment on this matter until the stewards have arrived at a decision."
In Sunday's race, Lance Stroll finished ninth in his Racing Point car, which is heavily modelled on last year's chanmpionship-winning Mercedes, while Renault's Daniel Ricciardo and Esteban Ocon came home fourth and sixth.
Nico Hulkenberg, drafted in as a late replacement for coronavirus victim Sergio Perez after he had tested positive on Thursday, was unable to start because his Racing Point car had a power-unit problem.
A decision from the sport's ruling body, the International Motoring Federation (FIA), on the first two Renault protests is expected next week.