Jenson Button hit out an at 'idiotic' move from Kamui Kobayashi after being forced to retire from the Korean Grand Prix on the opening lap.

Button sustained front-right suspension damage when he was collected by the Sauber man going into turn three, with the incident also seeing the Mercedes of Nico Rosberg forced into retirement.

The clash - which Button referred to as 'idiotic' on his team radio immediately afterwards - came after Button had been forced to take evasive action at turn one when Sergio Perez out-braked himself at the start.

It left Button watching on from the sidelines and the Briton was critical of the driving that had seen him put into retirement.

"I got a really good start, got past Michael and alongside Nico into turn one," Button told Sky Sports F1. "Then Perez came from nowhere, dived up the inside and hit the car in front. So I had to move out of the way - it was too late really to make that move as it proved when he hit the car in front.

"Then going down the back-straight, I was having a good little drag race with Nico Rosberg and suddenly I felt a big bang on the right hand side and had Kamui flying past. It is pretty poor driving standards considering this is the pinnacle of motorsport and it is such a long race.

"These guys are going round having fun out there and fighting for points - the race is not two corners long and some people need to learn that and whether they will ever learn that we will see."

Kobayashi was handed a drive-through for the incident although Button said he didn't feel the punishment had fitted the crime.

"I don't think so," he said. "You wipe out two cars that have a very good chance of scoring points..."

Kobayashi was later forced to retire from the race, amidst on-going speculation that he could lose his drive with Sauber despite his podium finish a week earlier in Japan.