Hamilton reflects on what might have been in stunning drive in Barcelona

Lewis Hamilton was left reflecting on 'what might have been' on Sunday after producing a vintage 'world champion' show at the Spanish Grand Prix.

Hamilton recovered from running last following a first-lap collision to finish fifth after a stunning race for Mercedes at the Circuit de Catalunya where he has won a record six times.

The seven-time world champion was in 20th position and 35 seconds adrift after pitting with a puncture on the opening lap, but then surged through the field as the fastest car in the race won by world champion Max Verstappen in a Red Bull one-two.READ | The champ is back! Verstappen takes the title lead with Spanish GP win

He would have finished fourth behind impressive teammate George Russell if not for a cooling problem that allowed Carlos Sainz to pass him for Ferrari on the closing laps.

"If I hadn't had that issue at the beginning, who knows where we would have been in the end?" he said.

"It's a horrible feeling being that far behind, but you have to keep your head up, keep pushing and hope for better."

After the clash with Kevin Magnussen's Haas, Hamilton volunteered to retire and save his engine, feeling that a points finish was not possible.

But Mercedes told him to stay out because they believed eighth was possible - and his surging drive earned him 'driver of the day' from the fans vote on the official Formula One website.

"They said I could maybe get to eighth and that doesn't feel like an impressive result, but at least I'd get into the points, but then to be fighting for fourth, I was so happy.

"The car felt great in the race. Our pace was closer to the top guys in the race, which is amazing.

An onboard look at Hamilton and Magnussen's tangle at the start ??#SpanishGP #F1