The McLaren-Honda MP4/6 that carried Senna to the 1991 title, pictured at the 2024 Goodwood Festival of Speed. Photo: Neil / Wikimedia Commons, CC BY 4.0
Ayrton Senna won his third Formula 1 world championship 35 years ago today, and he did it by finishing second. At the 1991 Japanese Grand Prix at Suzuka on October 20, 1991, Nigel Mansell spun out of contention on lap 10, Senna took the lead, and then, in sight of the flag, he backed off on the main straight and let McLaren team-mate Gerhard Berger take the win by 0.344 seconds.
It was a title decider, a team-orders story and a grudge match all in one afternoon. By the evening, a post-race outburst about the year before had nearly overshadowed the championship itself.
The 1991 title fight: McLaren’s head start against Williams’ speed
Suzuka was round 15 of 16. Senna had opened 1991 by winning the first four races in the McLaren-Honda MP4/6, and that early haul carried him through the summer. By midseason the Williams-Renault FW14 had become the fastest car in the field, and Mansell had clawed his way back into the fight.
With 10 points now on offer for a win, Mansell arrived in Japan 16 points behind, with only 20 left to play for. The math was brutal and simple: he had to win at Suzuka, and even that might not be enough. Senna only needed to keep scoring.
Suzuka also carried history. The 1989 and 1990 championships had both been settled there by collisions between Senna and Alain Prost. In 1991 Prost was at Ferrari, struggling with an uncompetitive car and out of the title picture, but the shadow of those two races hung over the weekend.
Berger on pole, Senna playing defense
Berger took pole with a 1:34.700, with Senna alongside him to give McLaren an all-red-and-white front row. Mansell lined up third, having been held up by a slower car on his final qualifying run.
McLaren’s plan was clear. Berger got away cleanly and pulled clear while Senna, in second, sat in front of the Williams and controlled Mansell’s pace. Contemporary reports say the two McLaren drivers had agreed that whoever led the early laps would be allowed to win, while the other helped him get away.
Lap 10: the moment the championship ended
Meanwhile, Mansell never found a way past. At the start of lap 10 he ran wide at the first corner, put two wheels on the kerb and slid into the gravel. He later pointed to a soft brake pedal. Whatever the cause, his race was over after nine completed laps, and so was his championship. Senna was world champion for the third time, with more than 40 laps still to run.
With the title settled, Senna went after Berger. He took the lead around lap 18 and the two McLarens traded fastest laps. Senna set the race’s fastest lap, a 1:41.532, on lap 39. Late in the race Berger’s Honda V12 developed a misfire, but he stayed in second, close enough for what came next.
The final-corner handover
Then, however, Senna gave the race back. On the final lap he slowed through the last corner and onto the pit straight and waved Berger past. Berger won by 0.344 seconds in a time of 1:32:10.695. According to Motor Sport’s report at the time, Senna said he slowed after a radio exchange with team boss Ron Dennis, who told him to swap positions.
For Berger, it was his first win as a McLaren driver, in his second season alongside Senna. It also gave Honda a one-two on home ground. Five years earlier, Berger had won his first Grand Prix by running non-stop on tyres at the 1986 Mexican Grand Prix for Benetton. This one came gift-wrapped.
1991 Japanese Grand Prix results: top six
| Pos. | Driver | Team | Time/Gap | Pts |
|---|---|---|---|---|
| 1 | Gerhard Berger | McLaren-Honda | 1:32:10.695 | 10 |
| 2 | Ayrton Senna | McLaren-Honda | +0.344s | 6 |
| 3 | Riccardo Patrese | Williams-Renault | +56.731s | 4 |
| 4 | Alain Prost | Ferrari | +80.761s | 3 |
| 5 | Martin Brundle | Brabham-Yamaha | +1 lap | 2 |
| 6 | Stefano Modena | Tyrrell-Honda | +1 lap | 1 |
The press conference that soured the celebration
The champion’s mood afterward was not celebratory. Senna turned on Jean-Marie Balestre, who had just left the presidency of the sport’s governing body. He blamed Balestre’s refusal in 1990 to move pole position to the cleaner side of the Suzuka grid for setting up that year’s first-corner crash with Prost. Senna said the collision was not his responsibility, while admitting he had contributed to it and had been prepared to crash.
As a result, even sympathetic observers found the remarks uncomfortable, and reports noted that Honda’s people were dismayed. The 1990 incident had always looked deliberate to many people. In 1991, its central figure all but confirmed it on the day he won his third title.
Why the 1991 Japanese Grand Prix still matters
It was Senna’s last title. He finished the season on 96 points to Mansell’s 72. He would win more races afterward, but no more championships. Honda points out that all three of his titles were sealed at Suzuka, in three of the four title-deciding races he contested there, all with Honda power. It completed a run that began with Lotus, including his 1985 Belgian Grand Prix win at Spa.
It marked the end of the McLaren-Honda era. McLaren went on to secure the 1991 constructors’ title, but the balance of power was shifting. Williams’ active-suspension FW14B dominated in 1992 and carried Mansell to the title, and Honda withdrew from F1 at the end of that season. It was McLaren’s last one-two until 1997 and Honda’s last until 2019. A Honda-powered driver did not win another world title until Max Verstappen in 2021.
Team orders, Suzuka and the 1991 legacy
It shaped how F1 talks about team orders. A champion handing a win to a team-mate in plain sight was a template that kept coming back, sometimes at the same track. A decade later Mika Häkkinen let David Coulthard through in his final race at Suzuka in 2001. Later swaps went far less smoothly, and the sport eventually wrote rules about them.
It confirmed Suzuka’s reputation as the place where titles are decided. The circuit settled championships again and again in the following years, and it still produces landmark days, from Michael Schumacher’s typhoon-delayed 2004 win to Kimi Räikkönen’s last-lap pass from 17th in 2005.
Championship deciders still turn on moments like the one at Suzuka in 1991: a single error, a points table and an instruction from the pit wall. Our coverage of Kimi Antonelli’s title-clinching weekend in Austin shows how this season’s championship played out.
Thirty-five years on, the image people remember from October 20, 1991 is Senna lifting to let Berger past, not Mansell in the gravel. He had already won the title, and he chose to give the race away.
Sources: Formula1.com race results and 1991 drivers’ standings; Honda Global, “Senna’s Career Vol. 3”; Motor Sport Magazine archive, 1991 Japanese Grand Prix report and “The other side of Senna”; GrandPrix.com race report.
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