Red Bull advisor Helmut Marko has blasted Mercedes' Pirelli test in Spain, insisting it is easily worth a second per lap. read more »

Christian Horner says he believes Mercedes carried out its Pirelli tyre test "in an underhand way" and hasn't complied with the Sporting Regulations read more »

Red Bull has accused Mercedes of being "underhand" in the way it conducted itself over Pirelli's secret Formula 1 tyre test in Barcelona. read more »

The latest controversy to hit Formula 1 is that of Mercedes and Pirelli conducting a private tyre test in which they completed 1,000km of running, using a 2013 car (the W04)... read more »

The FIA has issued a statement on the 'secret' tyre test which took place following the Spanish Grand Prix, resulting in an official protest by Red Bull and Ferrari... read more »

Formula 1 governing body the FIA says it only gave the green light for a 2013 chassis to be used at Mercedes' recent tyre test if the outing was "carried out... read more »

The FIA suggests that Mercedes could face sanctions over its Pirelli tyre test as there were conditions attached to the session in Spain which may not have been... read more »

The FIA has said that all 11 Formula 1 teams should have been given the opportunity to take part in a recent tyre test. Mercedes conducted three days of running following the... read more »

The Monaco Grand Prix stewards have opted to pass judgement over the private tyre test staged by sole Formula 1 supplier Pirelli and the Mercedes team after the Spanish Grand... read more »

The FIA have released a letter following a number of hearings today regarding the protest that Red Bull has filed against the Pirelli tyre test that was carried out by Mercedes... read more »

The FIA have issued a highly-critical attack on Pirelli and Mercedes' version of events resulting in their three-day 'secret' tyre test. read more »

The FIA says it only sanctioned the use of a 2013 Formula 1 chassis at the recent Mercedes tyre test if Pirelli ran the car, and if every team was offered the same opportunity... read more »

Sole Formula 1 tyre supplier Pirelli has explained to GPUpdate.net that Mercedes is not the first team with whom it has conducted a private test, reacting to the furore over a... read more »

Mercedes face an investigation by F1's governing body the FIA after being accused of taking part in an illegal tyre test. read more »

Race stewards in Monaco set to report to the FIA into Mercedes' Pirelli tyre test after hearing in Monte Carlo     read more »

Race Stewards in Monaco have opted to pass a report to the FIA in terms of the protest lodged by Red Bull and Ferrari following Mercedes' test in Barcelona with Pirelli. read more »

Nico Rosberg's Monaco Grand Prix victory was officially confirmed on Sunday evening after stewards asked to judge on Mercedes' controversial tyre test said that they... read more »

Lewis Hamilton says Mercedes' tyre issues in race conditions are not over despite team-mate Nico Rosberg's Monaco win. read more »

Mercedes' alleged breach of the Formula 1 regulations with its secret tyre test for Pirelli is now set to go to the FIA International Tribunal read more »

Nico Rosberg's victory in the Monaco Grand Prix is safe - despite the ongoing discussions regarding a protest about his Mercedes team's secret tyre test read more »

Mercedes team boss Ross Brawn has insisted that there was no way his squad could have benefited from the private test it carried out for Pirelli after the Spanish Grand Prix read more »

Mercedes executive director Toto Wolff insists there was nothing secretive about Mercedes tyre test with Pirelli following the Spanish Grand Prix read more »

Sebastian Vettel said Mercedes didn't win the Monaco Grand Prix because of its tyre test with Pirelli last week read more »

The FIA has confirmed Red Bull and Ferrari have lodged protests against Mercedes' tyre test with Pirelli in Spain earlier this month read more »

Dr Helmut Marko says Mercedes could have gained a one second per lap advantage by testing between the Spanish and Monaco grands prix. A controversy has erupted over... read more »