The export name of this car, the Z600, was simply because of the engine size of 598cc. This vehicle was available in Japan and other markets as the Z360, again due to the smaller engine size of 354cc. The "Z" designation was resurrected in 1998 and was discontinued again in 2003.
As with all cars in the Kei class, the Z600's specifications were tightly governed. The Z600 features an air-cooled, 354cc 2 cylinder engine with a 4 or 5 speed transmission driving the front wheels. Exported cars carried a 598cc engine, which was rated at 36hp (26kW). The 354cc version was available in Australia. One car magazine recording 136mpg-imp (2.08L/100km; 113mpg-US) when they didn't exceed 30mph (48km/h), which came at almost the perfect time with a gasoline shortage looming.
Despite its small size and low-powered engine, it had no problem maintaining freeway speeds and serving its purpose as a commuter. The only frequent complaint about the car was that it had a very harsh ride, which was largely due to its short wheelbase. The interior fit two adults comfortably, though the back seat was not nearly so.