Helmut Marko says reliability is not Red Bull's only problem - they are also lagging behind Ferrari and overweight. read more »

Helmut Marko says Red Bull's new RB18 is overweight and he hopes the team bosses agree to increase the minimum weight. read more »

Some Formula 1 cars may need to go on a diet before the season starts, it seems. read more »

Formula One drivers are in support of a return to in-race refueling as they see it as a temporary fix to one of the championship's biggest problems -- overweight cars. read more »

Sergio Perez has revealed Force India's overweight 2017 car has forced him into an "extreme diet" to shed pounds ahead of the new season. Force India's... read more »

Sergio Perez has admitted that he has been on a crash diet ahead of the Australian Grand Prix to help Force India cope with its overweight 2017 Formula 1 car read more »

Force India's new VJM10 is reportedly 10 kilograms above the minimum weight, a problem that hasn't been helped by the team's driver bulking up over the winter. read more »

Although Sauber launched a lighter car last time out in Barcelona, Adrian Sutil says the C33 is still overweight... read more »

Adrian Sutil has revealed that he didn't eat for two days in a bid to lose weight during the opening races of the 2014 season. The Sauber driver is one of the taller... read more »

Sauber will debut a heavily revised lightweight chassis at the Spanish Grand Prix next week and the team is pinning its points scoring hopes on the upgrade. The Hinwil outfit... read more »

Sauber are working on a new lightweight chassis which they hope to debut at the Spanish Grand Prix, in the hope of meeting the minimum weight allowance. The team have been... read more »

Sauber drivers Adrian Sutil and Esteban Gutierrez have revealed that the team's Formula 1 car is overweight at this stage of the 2014 season read more »

Mark Webber has denied Red Bull is running its car overweight in testing in order to conceal its hand from its rivals read more »