driving a
Porsche 804. Bonnier entered Formula One in , driving a
Maserati. His racing career almost ended in September 1956 in a race at
Imola. He debuted a 1500cc Maserati and moved up through the field following a bad start, passing
Luigi Musso, and was gaining on leader
Eugenio Castellotti at around two seconds per lap when he lost control after another car pulled directly into his path as they negotiated a fast corner. His Maserati struck a large rock at the edge of the road and catapulted. The other driver went underneath him as he turned over and over in the air and, while he was upside down, the crash helmet of his competitor made contact with his. Bonnier's Maserati landed on its side before skidding 75 feet and heading into a ditch, where it came to a stop against a pole. Bonnier was thrown out of the car and suffered concussion, several cracked ribs, and a broken vertebra. His car was completely written off. Bonnier's greatest achievement in Formula One was taking victory for
BRM in the
1959 Dutch Grand Prix at
Zandvoort, when the notoriously unreliable car worked well for once (
Dan Gurney and
Hans Herrmann had bad crashes after brake failures). He also won the 1960 German Grand Prix with a
Porsche 718, a race held for
Formula Two in preparation for the rule change of 1961. Bonnier was one of the driving forces behind the
Grand Prix Drivers' Association. Despite his win for BRM, Bonnier did not drive for many works teams throughout his career, with only one-offs as a replacement driver for
Lotus,
Brabham and
Honda. After his debut in a works Maserati, he then drove for his own
Joakim Bonnier Racing Team and for Mimmo Dei's
Scuderia Centro Sud in the late 50s, before finding a spot in the BRM and
Porsche teams. After Porsche quit Grand Prix racing at the end of the
1962 season, Bonnier switched to
Rob Walker Racing Team, the only privateer to have scored wins in World Championship events, where he drove
Coopers and Brabhams, scoring few points. In 1966, Bonnier reformed his own team as Anglo-Suisse Racing Team (later to be renamed Ecurie Bonnier), but his interest in Formula One gradually diminished. His last full season was 1968, in which he traded his old Cooper T86 for an old
McLaren. He raced occasionally in Formula One until 1971. In 1966, along with American racing drivers
Phil Hill,
Richie Ginther and
Carroll Shelby, he was racing advisor to the 1966 motor racing epic
Grand Prix starring
James Garner. All the aforementioned (including Garner, who did all his own driving) were employed as drivers for the racing scenes. While filming the
1966 Belgian Grand Prix at the notorious and extremely fast Spa-Francorchamps circuit, Bonnier, along with more than half the field including
Jackie Stewart,
Bob Bondurant,
Graham Hill and
Denny Hulme, crashed out on the first lap of the race. According to Phil Hill, Bonnier went through an upstairs window at a house next to the track and could not take part in the later filming on the circuit. ==Sports car racer==