AC Ace Bristol Zagato: A Rare Anglo-Italian Sports Car

Heritage Fusion - Automotive history is full of moments when engineering meets imagination, creating machines that feel larger than the era that produced them. In the 1950s, when European manufacturers were experimenting with lighter materials and sportier designs, one remarkable collaboration quietly produced a car that still fascinates enthusiasts today: the AC Ace Bristol Zagato. Blending British engineering with Italian design artistry, the car emerged as a rare and distinctive evolution of the classic roadster that would eventually inspire the legendary Cobra. 

The AC Ace Bristol Zagato blending British engineering with Italian design artistry, the car emerged as a rare and distinctive evolution of the classic roadster that would eventually inspire the legendary Cobra. (Picture from: Carrozzieri-Italiani)

The story begins with the AC Cars Ace, first introduced in 1953 and built around a lightweight chassis developed by engineer John Tojeiro. Early versions carried a modest two-liter engine, but the model gained new life when a 120-horsepower Bristol engine was adopted after roughly 220 cars had been produced. That upgrade transformed the Ace into a far livelier machine, sharpening its performance and giving the elegant barchetta-style sports car the kind of pace that made it competitive on road and track.

The AC Ace Bristol Zagato combined the Ace chassis with a lightweight Zagato aluminum body and its signature double-bubble roof, enhancing both aerodynamics and distinctive style. (Picture from: Carrozzieri-Italiani)

The unique Zagato-bodied version came to life through the vision of Swiss AC distributor Hubert Patthey. Convinced that the already capable Ace chassis could become something truly special, Patthey partnered with the Italian design house Carrozzeria Zagato. Their craftsmen reshaped the car with a lightweight aluminum body, dramatically reducing weight while adding unmistakable Italian flair. The design featured Zagato’s signature double-bubble roof, a functional detail that improved headroom and aerodynamics while giving the car an instantly recognizable silhouette. 

The AC Ace Bristol Zagato proved its true capability not only through its striking design but also through its performance in competition. (Picture from: Carrozzieri-Italiani)

Beyond its striking appearance, the AC Ace Bristol Zagato proved itself where it mattered most: in competition. The car was originally delivered to Swiss driver John Gretener, who used it in hill climb events around Lake Geneva. Later, it passed into the hands of legendary racer Joe Siffert, who continued to campaign the car in various events and historic races, including the iconic Mille Miglia. Its lighter body and agile chassis made it quick and responsive, qualities that helped it stand out among sports cars of its class. We apologize that a video of the specific car discussed is unavailable, so here is a video featuring the AC Cars Ace instead. | asSt90D_3Bs |

Today, the AC Ace Bristol Zagato remains a rare and fascinating example of cross-border automotive creativity. Born from British mechanical ingenuity, refined with Italian craftsmanship, and shaped by Swiss racing ambition, it captures the experimental spirit that defined late-1950s sports car culture. Decades later, the car still sparks curiosity and admiration, a reminder that sometimes the most memorable machines are created when bold ideas from different worlds come together on four wheels. *** [EKA | FROM VARIOUS SOURCES | CARROZZIERI-ITALIANI | STORY-CARS ]

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