Lewis Hamilton earned his fourth pole position of the Formula One season Saturday as Mercedes was again in a class of its own in qualifying for the Spanish Grand Prix, while four-time champion Sebastian Vettel was left stranded by his faulty Red Bull.

Hamilton clocked a leading lap of 1 minute, 25.232 seconds on the Barcelona-Catalunya circuit for his 35th career pole.

Mercedes teammate and F1 leader Nico Rosberg was second. Hamilton has won the last three races right in front of Rosberg, with the rest of the field far behind.

Vettel's car rolled to a halt during Friday's first practice session, and it failed him again early in the third period of qualifying.

Red Bull partner Daniel Ricciardo finished in third.