Hamilton never really had much of a challenge all race, taking the lead at the start, and except for one pit stop, regained the lead on lap 35 and kept it for rest of the afternoon.
"If I had braked, the auto would have spun the same way".
"It's taken a long time to be where I am today and he has some serious records and it's hard to beat a lot of these records that he had".
GETTYThe Brit increased his lead in the driver's championship to 17 points
Daniel Ricciardo had a lonely run to fifth position, having gone wide through the Turn 9 gravel early on, before suffering a spin later on, finishing over 20 seconds down on nearest opponent Vettel.
Vettel won this race back in 2011.
"That's more like it guys", said Lewis Hamilton, after he crossed the line to ensure a commanding victory in the Spanish GP here on Sunday.
Max Verstappen scored his first podium of the season despite yet another driver error during the race when he tapped Lance Stroll's right rear tyre while under Virtual Safety Car conditions.
As you were: Mercedes took its first pole position since the season-opener in Melbourne.
Vettel, who now trails Hamilton by 17 points in the drivers' standings, was only fourth after a change in strategy didn't pay off.
Where Hamilton's victory in the previous race in Baku had required a huge element of luck as well as the misfortune of several of his rivals, in Spain the four-times world champion was dominant.
But Ferrari's misjudgement saw Max Verstappen take advantage - despite an earlier coming together with Lance Stroll (him again) resulting in a virtual safety vehicle - to take his first podium of 2018 for Red Bull.
Nico Hulkenberg and Pierre Gasly were caught up in the chaos and could do nothing to avoid the Frenchman's careening auto. Ricciardo was eventually called in on lap 34, with Verstappen pitting a lap later. He said, "It feels nice to be on the podium and nice to have a good clean race". His team-mate Sergey Sirotkin was in 18th but has a three-place grid penalty from the last race. Fernando Alonso (McLaren) (all one lap); 9.
Ferrari took the chance to stop Vettel for a second time in fear that his rubber would not last the course, but he was stationary for more than five seconds which allowed Bottas, who did not stop, and also Verstappen to move ahead of the Ferrari man.
Grosjean's spinning vehicle resulted in an array of tyre smoke and the unsighted Hulkenberg and Gasly creamed into the stricken Haas, leaving all three out on the spot.
Sunday's Spanish Grand Prix was destined to be full of turmoil from before it began, courtesy of rain overnight that cut grip levels at Circuit de Catalunya.