Mark Webber has said that his inconsistency, particularly in the second half of the season, cost him a shot at the 2012 title.
Webber was within reach of championship leader Fernando Alonso after victories in Monaco and Britain, but fell back to eventually finish a distant sixth in the points.
"I was in a great position to challenge for the championship after that victory at Silverstone. Unfortunately, the season unravelled a bit for me after that", he wrote in his BBC Sport column.
"Ultimately consistency, which is one of the areas that has been very strong for me in the past, wasn't there. That was down to a whole raft of things, including a few own goals which we have to improve on next year".
Webber was confident with regards to his improvements over 2011.
"I was pleased that I improved my qualifying against Seb this year - 2011 was difficult for me in lots of ways but this season I was pretty much back to where I had been in 2010".
" I was closer to Seb [Vettel] than I have been at times in the past, so it was ironic that the points gap was bigger than it might have been".
Webber also defended world champion team mate Vettel, after he hinted that "lots of people outside Red Bull would have liked to see Fernando win it [the title]".
"There will always be different opinions on who has done what, and you can look at it either way. It's true to say that you never once went to a race this year and said: "Wow, the Ferrari's quick." That's one thing in my mind. But at the same time it is their job to be quick", with Webber citing the differences between Ayrton Senna and Alain Prost in 1993.
"It's so easy to say coulda, shoulda, woulda. Seb won the championship. That's it".