In other news, the manufacturer teams have agreed to drop the controversial and rather expensive MGU-H (the same part that troubled Ricciardo in Monaco!) from the sport come 2021.
Ricciardo topped every practice session and qualifying segment in the build-up to the race.
"Daniel did a great job today, so super happy for him, but ultimately we were all turned down and just cruising around, making sure we get to the end".
"It would have been nice to finish second, I did everything I could".
Vettel backed off after initially pushing for an overtake and he was unable to succeed on deteriorated tyres later in the race, settling for second to cut Lewis Hamilton's championship lead to 14 points - the Mercedes driver finishing in third. Kimi Raikkonen, who took pole position previous year, had to settle for fourth place, just 0.034s off Hamilton and 0.175s clear of the second Mercedes of Valtteri Bottas. "Starting last I managed to get two places straight away at the start which was good".More news: 'Hero' teacher shot three times as he stopped school attack
Vettel won a year ago from second.
Ricciardo was down on power for much of the race after engine gremlins struck with 50 laps still remaining. "Things can happen here".
"There is only Ferrari and Mercedes he could consider - but it is unlikely he is coming here", he said.
"We knew we wouldn't be the quickest here, just did the best we could", Hamilton said.
"It was a bit boring, the race", said Vettel.More news: Sunrisers prepare to take on Dhoni's Super Kings in IPL final
Ricciardo will be optimistic of grabbing his second win of the season, after victory in China last month, and seventh overall.
The Dutch driver made the most of his auto advantage in the Principality, running a long first stint on the ultrasoft tyres before switching to the faster hypersofts for the closing stages. At the restart I didn't have much confidence in the tyres, I lost quite a lot. Ricciardo pointed out the issue to the pit garage, but Red Bull indicated that it wasn't something that could be fixed. It later transpired that he had damaged his gearbox, and Red Bull were unable to replace it in time for him to compete in qualifying. All three sectors of the 1:10.846 lap were impressive, but it was in the high-speed final sector - where bravery is rewarded for skimming the walls at the Swimming Pool chicane - that Ricciardo made the biggest difference.
The young Aussie who was delirious with delight after the Red Bull team that is sponsored by Aston Martin who also supply the engines, Hewlett IBM Citrix among a few. "Lovely track in its day, but not suitable for modern racing".
"The risk and reward is very well known here", Ricciardo said.More news: Chris Paul Hasn't Tested Hamstring Injury; Game-Time Decision for Game 7