Born in Paris in 1934, Soisbault first distinguished herself as a tennis player before turning to racing. She reached the semifinals of the Wimbledon 1952 Junior Tournament, demonstrating a competitive talent that would define her across multiple disciplines. However, the financial rewards of tennis in that era could not match what motorsport offered, and by her early twenties she had redirected her energy toward racing.
Soisbault's entry into motorsport came through her purchase of two cars: a Delahaye Grand Sport and a Triumph TR3. She quickly established herself on the French and European scene, earning a reputation as one of the finest women racers of her generation.
Her first recorded competitive appearance came as a backup driver in the 1956 Monte Carlo Rally, one of the most demanding events on the European rally calendar. The Monte Carlo's combination of alpine roads, ice, and night stages tested both car control and endurance — qualities that Soisbault had in abundance.
Through the late 1950s and into the 1960s she continued to build her record across circuit racing and rally events, becoming a recognized presence in French motorsport circles at a time when women competitors were rare and often discouraged.
In 1963, Soisbault won the Ladies' Cup at the Tour Auto, a prestigious French touring-car endurance event that covered public roads across the country. The Tour Auto attracted serious machinery and competitive fields, and taking the ladies' honours underlined her standing as a genuinely fast driver rather than a novelty entry.
Her most technically notable achievement came in 1966 at the Mont Ventoux hillclimb, where she became the first woman to average more than 100 km/h over the famous Provençal mountain stage. She accomplished this driving a Porsche 906 — a lightweight, purpose-built racing prototype with a rear-mounted flat-six engine. The 906 was among the most advanced machinery of its day, used by factory Porsche and leading privateer teams alike at Le Mans and the Targa Florio. Averaging over 100 km/h on a hillclimb of Mont Ventoux's character required sustained commitment on a road that combines tight hairpins with fast exposed sections and significant elevation change. The achievement stood as a benchmark for women drivers on that circuit.
Annie Soisbault competed in an era when opportunities for women in motorsport were limited both by regulation and by social convention. Her willingness to drive serious machinery — rally cars, sportscars, and ultimately a factory-specification Porsche prototype — and to compete for outright results rather than just class honours set her apart. The Mont Ventoux record in particular demonstrated that she sought genuine performance rather than symbolic participation.
She died in Paris on 18 September 2012 and is buried at Père Lachaise cemetery. Her career remains a reference point in French motorsport history for women who competed seriously in the post-war decades.