Bernie Ecclestone thinks urgent changes to improve the Formula 1 spectacle are now essential - after claiming on Sunday that the current state of the racing is... read more »

Ferrari's poor display in the Australian GP was unacceptable, according to technical director James Allison. read more »

While happy Ferrari made it to the finish line in Australia, James Allison concedes next time they need to do it a bit faster... read more »

Renault Sport has admitted its power unit problems at Jerez this week have been "unacceptable" but is confident it will be able to fix the problem by the next test in... read more »

Felipe Massa says the drive-through penalty he received for cutting across the pit lane entry during the Brazilian Grand Prix was "unacceptable" read more »

Felipe Massa has branded the drive-through penalty that wrecked his final race for Ferrari as "unacceptable". read more »

Felipe Massa has hit out at the Brazilian race stewards for a "pretty unacceptable" penalty that cost him in his Ferrari swansong... read more »

Felipe Massa has blasted the Brazilian race stewards for penalising him, describing his drive-through as "unacceptable" and a great "shame". The Ferrari... read more »

An irate Felipe Massa has continued his heavy criticism of his controversial drive-through penalty in the Brazilian GP, branding the ruling "unacceptable" and... read more »

McLaren's Sergio Perez has added his voice to the growing number of drivers speaking out about the state of the tyres in F1 in 2013.     read more »

Although Sergio Perez admits degradation is "part of the game", the McLaren driver says Pirelli's blow-outs are "totally unacceptable"... read more »

Sergio Perez has slammed Pirelli's response to his Korean Grand Prix puncture after the Mexican's front-right explode whilst he was travelling at 160mph.... read more »

Sergio Perez thinks his tyre delaminating at the Korean Grand Prix and Pirelli's response to it were "absolutely not acceptable" read more »

Sergio Perez thinks it is 'unacceptable' that he suffered a tyre failure after a lock up at last weekend's Korean Grand Prix. read more »

Pirelli's motorsport director Paul Hembery believes the criticism levelled at the official tyre supplier is "unjustified" and is often thrown around for... read more »

Felipe Massa has labelled the string of tyre failures in the British Grand Prix as "unacceptable" and called on the FIA to force through changes on safety grounds. read more »

Felipe Massa branded the tyre failures at Silverstone as "an unacceptable situation" and said he was putting his safety "in God's hands" during the... read more »

Lewis Hamilton says it is "unacceptable" that four drivers suffered tyre blowouts at the British Grand Prix and that "safety is the biggest issue".... read more »

Several Formula 1 drivers have described Pirelli's tyre problems in Sunday's British Grand Prix as "unacceptable". read more »

Lewis Hamilton has demanded changes be made to the tyres after he and four others suffered spectacular tyre failures during the British Grand Prix. The Mercedes driver, who had... read more »

Sergio Perez and Jean-Eric Vergne have criticised Pirelli after they were two of five drivers to suffer failures during the British Grand Prix. Vergne suffered a failure under... read more »

Felipe Massa has refused to rule out a boycott of the German Grand Prix if changes aren't made to the Pirelli tyres following a spate of failures during the British GP.... read more »

Lewis Hamilton has labelled the Pirelli tyres a safety concern after he was one of three drivers to suffer a rear puncture at the British GP... read more »

Lewis Hamilton and Sergio Perez declared Pirelli's British Grand Prix tyre problems as "unacceptable". read more »

Red Bull were rumoured to have dropped their alternator supplier at the start of this season following repeated problems in 2011 and 2012 which cost them valuable points,... read more »