Lewis Hamilton: Car failures cost me World Championship
Lewis Hamilton says car failures were the only reason he lost his world title to Mercedes team-mate Nico Rosberg.
The Briton had three engine failures over the season, which impacted on his points total, while Rosberg had none.
Hamilton won Sunday's season-ending race in Abu Dhabi but the German was second - sealing the championship.
"I did everything I could, particularly towards the end. Nico had a clean year without any real issues and that's why we sit in this position," he said.
"But he did a fantastic job, so big congratulations to him."
Hamilton, 31, had two identical problems with the hybrid system that meant he started down the grid in early-season races in China and Russia, and the replacement parts used in the repairs led to a grid penalty that meant he had to start at the back at the Belgian Grand Prix later in the year.
He then had an engine failure while leading the Malaysian Grand Prix in September, which turned what would have been a small lead in the championship over Mercedes team-mate Rosberg into a 23-point deficit with five races to go.
"I was generally quickest most of the year, so it's definitely been a positive, a lot of positives to take from it. So I take that into next season," Hamilton said.
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By contrast, 31-year-old Rosberg only suffered one technical problem in a race, which dropped him from second to third at the British Grand Prix at Silverstone.
Hamilton decided to drive deliberately slowly in Abu Dhabi in an attempt to back Rosberg into other drivers and demote the German below the third place he needed to clinch the title.
He repeatedly ignored orders to speed up from the team, and said he made no apologies for his actions.
"I'm in a position where I've obviously had a lot of points lost during the season so, for me, I'm out there fighting and I generally never try to do anything to harm the team or the brand or anything like that.
"But we've won the constructors' championship so it was down to me and Nico and yet they still felt they needed to make comments.
"We'll discuss it afterwards as a team as we always do and pull back in. But we can't let that overshadow the fact Nico's just won a championship and the team has dominated all year long. It's been an incredibly successful year."
Rosberg said there had been two defining moments in his success this year - one was losing the 2015 championship to Hamilton with three races to go in the US and the other was his decision while winning the first four races of this season to focus hard only on each individual weekend and not address the championship at all in public.
"Austin was a horrible experience for me and I really spent two days just on my own thinking and I said I didn't ever want to experience that again," said the German.
"And then I went and won the next seven races on the trot. It was a big moment for me and one of the key moments in being here today."
He added: "(Mental strength) is a key ingredient. It's continual. It's just my approach I have taken for myself.
"Everybody does it his own way. For me that feels best and I've really learned to focus hard. It takes a lot of sacrifice to stay so focused during a whole year."
He added that he had not decided whether to use the number one on his car next year, as is his right as world champion.