Alfa Romeo SZ ES-30 Sprint Zagato

Alfa Romeo SZ ES-30 Sprint Zagato

The Alfa Romeo SZ, officially designated ES-30 (Experimental Sportscar 3.0), is one of the most provocative and polarizing cars of the late 1980s. Nicknamed 'Il Mostro' — The Monster — by the Italian press upon its 1989 debut, the SZ was a collaboration between Alfa Romeo, Zagato, and the design consultancy of Robert Opron (formerly of Citroen and Renault). Its angular, blocky styling divided opinion sharply: some saw it as a bold artistic statement, while others found it ugly. Today, the SZ is increasingly appreciated as a design masterpiece that was simply ahead of its time.

The body was constructed using a thermoplastic composite material developed by the Carplast company, bonded to a steel floorpan derived from the Alfa Romeo 75 (known as the Milano in North America). This composite construction technique was advanced for the era and resulted in panels that were lighter than steel while also being resistant to minor impacts and corrosion. The angular design was not merely aesthetic — it was developed with significant wind tunnel testing to minimize aerodynamic lift and optimize cooling.

Underneath the dramatic bodywork lay what was arguably the most sophisticated chassis in Alfa Romeo's road car history. The rear suspension used a de Dion axle with a Watt's linkage — an unusual and expensive configuration for a road car that provided the lateral stiffness of a live axle with most of the ride quality benefits of independent suspension. Combined with Koni electronically adjustable dampers that could be switched between comfort and sport modes from the cabin, the SZ offered handling that contemporary testers described as astonishing, with minimal body roll and tremendous grip.

The engine was Alfa Romeo's legendary Busso-designed 3.0-liter V6, here producing 210 horsepower through Bosch Motronic fuel injection. While not outrageous in power output, the Busso V6 is widely regarded as one of the most beautiful-sounding engines ever made, with a melodic, soaring exhaust note that became an integral part of the SZ driving experience. The engine was mated to a ZF five-speed manual transmission.

Performance was respectable rather than spectacular: 0-100 km/h took approximately 7 seconds, and top speed reached 245 km/h. But the SZ was never about straight-line speed. Its genius lay in its handling, which allowed talented drivers to exploit the mechanical grip and chassis balance to carve through corners at remarkable pace. The car generated 1.0g of lateral grip on standard tires — an exceptional figure for the period.

Production was limited to 1,036 units of the SZ coupe, all finished in Rosso Alfa (Alfa Red) with a tan interior. A convertible version, the RZ (Roadster Zagato), followed in 1992 with production of approximately 278 units. Every SZ was individually numbered, and each came with a certificate of origin signed by the Alfa Romeo factory.

The SZ's significance extends beyond its technical merits. It represented a moment of creative boldness from Alfa Romeo at a time when the company was struggling financially. The decision to produce such an uncompromising and visually challenging car spoke to Alfa's enduring commitment to automotive passion and design risk-taking. Today, the SZ is one of the most sought-after modern Alfas, with clean, low-mileage examples commanding significant premiums.