"It feels like a long time since we had a 1-2 finish, so there's definitely a measure of relief in how we asserted ourselves". Lewis Hamilton finished out front followed by his Mercedes teammate Valtteri Bottas with Red Bull's Max Verstappen finishing third.
Within a few laps a six-second lead over championship rival Sebastian Vettel appeared ominous, and indeed it was as the Ferrari, hitherto the best auto in the field, couldn't get anyway where near the back of the Mercedes. After that I was really surprised they didn't have the pace to keep up with me.
Hamilton said he had finally rediscovered a good feeling with the auto that had been lacking in Bahrain, China and Azerbaijan, following the season-opening Australian Grand Prix. "It's a really good feeling".
The defending four-time world champion dominated and clocked a series of record laps as he registered the 64th victory of his career.
Said fastest race lap by Ricciardo also smashed the all-time record at the Circuit de Catalunya.
"This weekend we got ourselves on the right path", Hamilton said.
"I think it's obviously a little bit early to say but I would like to hope that it could be part of a turning point".
Hamilton becomes the first driver since Michael Schumacher - who won the race four times in succession from 2001 to 2004 - to claim back-to-back victories in Barcelona. Daniel Ricciardo was fifth in the second Red Bull while Magnussen in the Haas finished behind Ricciardo.
Vettel stopped on lap 17 for a new set of tyres, while Bottas was called in by Mercedes two laps later. After five races, we have a much better understanding of the auto, of what we need to do to get the vehicle working.
The poor results by Vettel and Raikkonen dropped Ferrari behind Mercedes at the top of the constructors' championship.
Sebastian Vettel has said that he is concerned but not panicked after falling even further behind in the world championship battle in Spain. "I wasn't", said Hamilton.
After Hamilton's dominant pole position in the Australia season-opener, Ferrari defeated Mercedes in three consecutive qualifying shoot-outs before this weekend.
The race started with a bang when Romain Grosjean managed to clean up Nico Hulkenberg and Pierre Gasly on the first lap. Following a safety vehicle appearance, Hamilton got the whole shot on the restart and rabbited away. He has a three-place grid penalty for Monaco.
Despite the Ferrari driver's fresher tyres, and the fact that Verstappen had damaged his front wing when he hit the rear of Lance Stroll's lapped Williams at the VSC restart, Vettel was unable to dislodge the Dutchman from the final step of the podium.
"But we could easily go to the next race and struggle and be nowhere". Ominously for his rivals, he said he felt the synergy between himself and the vehicle for the first time in 2018. Finland's Kimi Raikkonen, when sitting second, also retired on lap 27 of the 66-lap race with a lack of power.