2014 was an incredible year for Lewis with eleven wins, 384 points and 16 podiums.
A new rule for the season allowed the drivers to pick a unique car number that they will use for their entire career. Hamilton picked #44, the same number he used during his karting days.
During pre-season testing in Jerez Hamilton along with Mercedes team-mate Rosberg showed themselves as the team to beat. This was realised at the Australian Grand Prix where Hamilton took pole. He was forced to retire, but Rosberg dominated to win by over 20 seconds.
In Malaysia, Hamilton's potential was realised when he won from pole in a Mercedes one-two, the first since 1955. In Bahrain Mercedes were unstoppable with Rosberg claiming pole in a Mercedes front-row lockout. Hamilton got a better start but still battled hard with Rosberg through the early part of the race. Mercedes chose split strategies for their drivers, and Hamilton opened up a gap on the faster option tyres. But the safety car was called out after Esteban Gutiérrez rolled his Sauber. Hamilton was forced to battle Rosberg in a gripping race to the finish with tight wheel-to-wheel racing. In the end Hamilton won, taking consecutive victories for the first time since the 2010 season, when he won in Turkey and Canada.
Mercedes' dominance was further confirmed in China where Hamilton took pole and then led every lap of the race while his teammate finished in second place. This completed a hat-trick of wins, the first of Hamilton's career. Mercedes continued to dominate in Spain where Hamilton once again set pole position and went on to win the race – his fourth successive win – despite close competition from team-mate Nico Rosberg who finished in second place.
At Monaco Hamilton qualified 2nd behind Rosberg. Rosberg was investigated by the stewards after he went down the escape road at the Mirabeau corner. The resulting yellow flags forced Hamilton to back off in the final moments of the session, which could have cost Hamilton a chance at pole position. Rosberg was cleared of any wrongdoing in that incident. Rosberg won the race with Hamilton finishing 2nd. During qualifying for the German Grand Prix, Hamilton had a brake failure and started 20th but managed to finish 3rd. An engine fire in qualifying for the Hungarian Grand Prix meant he would start from the pit lane from where he again managed to climb to third ahead of Rosberg.
At the first race after the summer break in Belgium, Hamilton took the lead from Rosberg at the start but a collision between them on lap two punctured his rear tyre and he later retired from the race. He then won the Italian, and SingaporeGrands Prix each from pole to take the lead in the Drivers' Championship. This was followed by victories at the Japanese Grand Prix – which was stopped due to heavy rain – the Russian and United States Grands Prix to achieve five consecutive victories for the first time in his career. His tenth victory of the season was also his 32nd career victory, the most of any British driver.
Hamilton became the World Champion after winning the Abu Dhabi Grand Prix, beating team mate Rosberg by 67 points, after Rosberg's car encountered mechanical trouble during the race. Hamilton said in the podium interview "This is the greatest day of my life".