The British court ruling went in favour of the Formula One boss in that it dismissed a German firm's claim for damages from him, but it contained damning conclusions about the 83-year-old who has dominated the motor racing business for decades.
The judgment by the London High Court added to Ecclestone's legal woes ahead of his criminal trial, scheduled to start in Munich in April, over the same events dating back to 2005.
"I am afraid that I find it impossible to regard him (Ecclestone) as a reliable or truthful witness," Judge Guy Newey, who had heard oral evidence from Ecclestone during the civil trial, wrote in his judgment.
Ecclestone told Reuters by telephone that he was pleased the damages claim against him had been dismissed and he disagreed with what the judge had said.
"He's come up with an opinion, he thought I didn't tell the truth and I wasn't reliable. I was reliable because I turned up on time. I think I answered truthfully the questions I was asked," he said.
The trial stemmed from a claim for more than $100 million in damages against Ecclestone and others connected to him, brought by German media company Constantin Medien.
Constantin had alleged that a controlling stake in Formula One held by German bank BayernLB had been undervalued when it was sold to private equity fund CVC as a result of a "corrupt bargain" between Ecclestone and former BayernLB banker Gerhard Gribkowsky.
Constantin, which had an interest in the BayernLB stake, alleged it had lost out as a result of the undervaluation, hence its claim for damages against Ecclestone and others. It said it would appeal against Newey's decision to dismiss the claim.
Gribkowsky was jailed by a Munich court in 2012 for tax evasion and corruption for taking a $44 million payment from Ecclestone and his family trust after the Formula One sale.
Judge Newey rejected Ecclestone's explanation that the $44 million payments were unrelated to the sale and that he had made them because Gribkowsky was threatening to make false claims about Ecclestone's tax affairs.
"The payments were a bribe," the judge wrote.
"They were made because Mr Ecclestone had entered into a corrupt agreement with Dr Gribkowsky in May 2005 under which Dr Gribkowsky was to be rewarded for facilitating the sale of BLB's shares in the Formula One group to a buyer acceptable to Mr Ecclestone."
That is potentially damaging to Ecclestone as the same factual issues will form a substantial part of his looming trial in Germany. He faces a possible jail sentence if convicted.
The British judge also rejected Constantin's version of events, saying it was "no part of Mr Ecclestone's purpose" to undervalue the BayernLB stake.
"Mr Ecclestone's aim was to be rid of the banks. He was strongly averse to their involvement in the Formula One group and was keen that their shares should be transferred to someone more congenial to him," he wrote, referring to CVC.
Ecclestone denied that he had paid Gribkowsky to facilitate the sale to CVC because the private equity firm had promised to keep him in his post at the helm of Formula One.
"An awful lot of money to pay to somebody to keep your job," he told Reuters, maintaining his version of events.
"I've said he shook me down a bit. And I was a bit stupid to go along with it. It was cheaper to pay him ... than have the revenue (the tax authorities) climb all over me for three or four years when I had to prove something that he'd said didn't happen."
Ecclestone has been forced to relax his grip on Formula One pending the outcome of the German criminal case.
Formula One has said that Ecclestone remains in day-to-day charge of running the business, which has an annual turnover of around $1.5 billion, but he has stepped down as a director pending the outcome of the German trial.
Ecclestone will also face tighter supervision from a Formula One board that includes prominent businessmen including Nestle chairman Peter Brabeck and CVC co-founder Donald Mackenzie.
The uncertainty over Ecclestone's future makes it hard to revisit stalled efforts to launch an initial public offering of a sport that attracts hundreds of millions of television viewers to its series of grands prix held around the world.
"I'm still running the business, as I've always run it," Ecclestone said by telephone.
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