The Infiniti G-series is a line of compact executive/entry-level luxury sports car produced by the Infiniti division of Nissan for the 1990–1996 and 1998–present model years. The first two generations of the Infiniti G (P10 and P11) were sedans based on the Nissan Primera. Beginning with its third generation (V35), the Infiniti G have been rebadged versions of the Nissan Skyline line of sedans and coupes that were exported to the United States and Canada. The current incarnation is the fourth generation (V36) which introduced the hardtop coupe convertible. The Nissan FM platform, on top of which the third and fourth generations (V35 and V36) of the Infiniti G have been built, also underpins the Nissan 370Z and has shared components with the Infiniti M, Infiniti EX, and Infiniti FX.
In May 2013, Infiniti announced a new naming convention beginning with the 2014 model year; all passenger cars are designated by the letter "Q," while sport-utility model names will begin with "QX." The Infiniti G was to have been replaced by the Infiniti Q50, but the G37 was revived as the Q40 beginning with the 2015 model year.