It featured the 18th World Championship of Drivers, the 10th International Cup for F1 Manufacturers, and six non-championship races open to Formula One cars.
Hulme also became the first driver in World Championship history to win the title without having scored a pole position during the season.
His Brabham slid off the track in wet conditions and hit a marshals post, suffering serious chest and neck injuries and later dying in hospital.
A pink background denotes additional Formula 2 entrants to the German Grand Prix on the very long Nürburgring track.
After Lorenzo Bandini's fatal accident, the FIA banned circuit organisers from using straw bales along the track[3] and TV crews from flying their helicopters too low, as both had contributed to the fire flaring up.
Coming down from his third World Championship in 1966, Jack Brabham started this year off as well, with a pole position at the South African Grand Prix.
Teammate Denny Hulme started second and two-time World Champion Jim Clark lined up in third in his Lotus.
Jack Brabham scored pole position like in South Africa, but again lost the lead at the start, this time to long-time Ferrari driver Lorenzo Bandini.
Desperately trying to get closer, Bandini struck the barrier in the chicane at the harbour front and mounted the straw bales.
[5] When Lotus could finally run the new Cosworth engines in the Dutch Grand Prix, their pace was significantly better than before and Hill snatched pole position.
After drivers had to avoid a wandering marshal on the grid, the positions at the front remained rather the same, until Gurney made a pit stop.
[6] Qualifying for the Belgian Grand Prix ended up with quite the same drivers at the front, except Brabham could only manage seventh.
Then, Clark had to pit to change a spark plug and Stewart ran into trouble with his gearbox, and Gurney took the lead.
Denny Hulme (Brabham) was first with 16 points, ahead of Pedro Rodríguez (Cooper) and Chris Amon (Ferrari) with 11.
Clark took a comfortable win, ahead of Hulme and Amon, the Ferrari driver having passed Brabham four laps from the end.
The American set a new lap record, despite an extra chicane having been added to the circuit, and increased his lead over Hulme to over 40 seconds.
On lap 13, however, his Eagle's drive shaft broke and cut through an oil pipe, handing Hulme a lucky victory, ahead of teammate Brabham and Ferrari driver Amon.
The Canadian Grand Prix was on the championship calendar for the first time and was supposed to be a one-off in celebration of Canada's 100 years of independence, but the popularity of the event would result in F1 returning to Mosport Park seven more years and the Canadian GP still being featured on the calendar today.
Jim Clark (Lotus) qualified on pole position, ahead of teammate Graham Hill and championship leader Denny Hulme (Brabham).
Clark's engine got soaked and cut out, while Hulme desperatly needed clean goggles so chose to pit.
[11] Qualifying for the Italian Grand Prix was disrupted by rain, but the result was not surprising: Clark scored his fifth pole position of the year, ahead of Brabham and McLaren.
This gave Ferrari driver Chris Amon a chance for second place, but his engine ran out of oil with 12 laps to go.
One could say it was the summary of the season: the Lotuses were unreliable and finished less than half of the races, but if they did, they were so fast that they lapped the rest of the field.
[13] Going into the final race, the Mexican Grand Prix, Hulme had a lead of five points in the standings, so if Brabham wanted to do anything about it, he needed to win and for his teammate to finish fifth or lower.
Hulme is the only champion to date from New Zealand, and the first of two drivers to win the title without achieving a pole position in the season.