The problem is that the car could roll away in Park.
This is the same issue with the Frontier and Titan.
All 2023 Nissan Z sports cars equipped with the 9-speed automatic transmission have been put on ice no matter where they are. Due to a known rollaway problem, where the car could roll even when in Park, Nissan has ordered a stop-sale and delivery of the car.
The bug is that the parking pawl, the component that essentially locks the transmission and holds the car in place when in “Park”, might get caught on other components in the transmission and not fully engage. This could lead to a situation where, on a mild incline, the car could roll away.
This is a known issue with the transmission. It is shared with the new Nissan Frontier and the Titan. In fact, two separate recalls have already been issued and the second, released earlier this month, including the Z.
“Nissan initiated a quality hold on MY2023 Nissan Z automatic-transmission-equipped vehicles on August 29, 2022, while it investigates this issue. The investigation is ongoing at this time,” Nissan spokesperson Jonathan Buhler told Autoblog, confirming that this constitutes “[…] a stop-sale for any AT model whether it is on a showroom floor or in any other stage.”
Nissan is currently working on a fix.