This 1991 Alfa Romeo SZ is #993 of 1,036 examples produced over a three-year model run, and it was reportedly exported to Canada from Japan prior to being imported to the US. Finished in red with a gray roof over tan leather upholstery, the car is powered by a 3.0-liter Busso V6 mated to a rear-mounted five-speed manual transaxle. It rides on an adjustable coilover suspension along with 16″ multi-piece wheels and is further equipped with a rear spoiler, a Supersprint exhaust system, a MOMO steering wheel, Veglia instrumentation, and a JVC CD stereo. Work completed in 2024 is noted to have involved performing a timing belt service, bleeding the brakes, and replacing the engine mounts, clutch assembly, and a number of ignition components. Recently acquired by the selling dealer, this SZ now shows 13k kilometers (~8k miles) and is offered with a clean Carfax report and a clean Arizona title.

Debuting at the 1989 Geneva Motor Show, the SZ was a result of Alfa Romeo’s Experimental Sportcar 3.0 litre (ES30) project and recalled the Sprint and Sport Zagato competition cars of the 1950s. While designed in-house with computer-aided design and manufacturing (CAD/CAM) systems, the car was assembled by Zagato using injection-molded composite bodywork over a chassis based on the Alfa Romeo 75.

Given the moniker Il Mostro, or The Monster, all SZ examples were finished in Rosso Alfa with a contrasting gray roof and featured a pronounced wedge shape with low ground clearance, a high beltline, and a tail end abruptly cut behind the rear wheels. The front bumper cover on this example is believed to have been refinished, and other details include six square headlights, side marker lights, Zagato fender badges, a rear spoiler, and a single oval-shaped and Supersprint exhaust finisher.

Staggered-width 16” multi-piece alloy wheels wear 205/55 front and 225/50 rear Pirelli P Zero Rosso tires that are said to have been mounted in 2024. The suspension and brakes were carried over from the 75 1.8 Turbo Evolution competition car and featured driver-adjustable dampers as well as rear-mounted inboard disc brakes. The seller states that the brake fluid was bled in 2024.

The tail panel opens to reveal a temporary spare wheel and tire.

The bolstered bucket seats are upholstered in tan leather that extends to the ceiling and door panels. Debossed Zagato Design logotype adorns the headrests, and additional appointments include air conditioning, a JVC CD stereo, and power windows and door locks.

The MOMO steering wheel fronts white-letter Veglia instrumentation consisting of a tachometer with a 6,500-rpm redline accompanied by a 280-km/h speedometer, a quartz clock, and centrally mounted auxiliary gauges. The six-digit mechanical odometer on this Alfa Romeo SZ shows 13k kilometers (~8k miles).

An identification plate aft of the shifter denotes this car as number 993.

The 3.0-liter Busso V6 features an aluminum block, a single overhead camshaft for each cylinder bank, and Bosch fuel injection. Output was factory-rated at 207 horsepower in SZ specification. Work completed in 2024 is said to have involved performing a timing belt service as well as replacing the engine mounts, distributor cap and rotor, spark plugs, ignition wires, battery, and crankshaft position sensor. Sound deadening material has been adhered to the underside of the hood.

Power is sent to the rear wheels through a rear-mounted five-speed manual transaxle. The clutch assembly was reportedly replaced in 2024 along with the flywheel bearings, CV boots, and propellor shaft couplings.