The Haas Formula One team lost on Friday a bid to overturn a stewards' decision that excluded French driver Romain Grosjean from sixth place at the Italian Grand Prix in September.

The court said a detailed explanation would be issued at a later date.

The U.S.-owned team expressed disappointment with the outcome.

"We simply move forward and look to the final two races of the year to continue to fight on track, earn more points and conclude our strongest season to date," said team principal Guenther Steiner in a statement.

Ferrari-powered Haas are fifth in the constructors' championship, 30 points behind Renault, who had questioned the legality of the floor on Grosjean's car at Monza.

The Frenchman's result, worth eight points, had put Haas ahead of Renault in the standings but his exclusion dropped them back to fifth.

Renault argued that Haas had not complied with a technical clarification issued to teams in July, and presented photographic evidence to back up their argument.

"Technical Regulations -- especially those introduced for safety reasons -- must be observed strictly," said Renault chassis technical director Nick Chester, expressing satisfaction with the decision.