1999 Nissan Concept Z is a controversial, attempt to revive the iconic Z-car brand during a period of financial instability for Nissan. Unveiled at the 1999 North American International Auto Show, it was designed to bridge the gap between the discontinued 300ZX (Z32) and a future production model

Contrary to Z-car tradition, it featured a 2. 4 liter 4 cylinder (KA24DE) engine—shared with the Altima and 240SX—producing 200 hp and 180 lb-ft of torque.

A "retro-modern" aesthetic in bright orange, heavily inspired by the original 240Z's swept-back silhouette. It was developed in just 12 weeks at Nissan’s California design studio.

While the styling was seen as an interesting homage, critics and enthusiasts largely rejected the four-cylinder engine, considering it an "insult" to the Z-line's six-cylinder heritage.

Despite the mixed reception, the concept proved there was still massive public interest in a new sports car. This eventually led Nissan CEO Carlos Ghosn to greenlight the development of what became the 350Z (Z33), which debuted with a proper V6 in 2002.

Design elements from the 1999 concept, particularly the proportions and circular lighting motifs, were later cited as influences for the current generation Nissan Z (RZ34).