Jenson Button has branded the MP4-27 as the worst car he has driven at McLaren

Jenson Button has described the MP4-27 as the worst car he has driven during his time at McLaren after another difficult weekend in Abu Dhabi.

The car certainly worked well for Hamilton in Abu Dhabi until his retirement. The Mercedes-bound driver enjoyed an advantage of over three tenths in the final part of qualifying and looked poised for victory until unreliability once again struck the 2008 World Champion's car. "It's twice in the last five races," Hamilton said. "And the cars, apart from India, have had problems in all five. In Singapore we had the gearbox failure, at Suzuka a rear rollbar malfunction, before qualifying and in the race, and in Korea a rear rollbar failure. Then we had India, which was fine, and then here. So that's four hardcore difficult weekends. "I've been on pole position seven times this year. I have only won three times. In the other ones we've had failures and issues with pit stops and so on. If my car was as reliable as Sebastian's or Fernando's I would be right up with them now. But the team is strong and they will always bounce back."