Stratum

The Zirconium Stratum is a midsize, four-door station wagon with room for four people. It returns to the HD Universe from the 3D Universe and appears in Grand Theft Auto V and Grand Theft Auto Online. Its GTA V design retains the streamlined wagon shape used in GTA IV, with blue Zirconium badges at the front and rear. The enhanced version uses the Feroci interior shared with the Ingot and Intruder.

The Stratum appears in single body colours and uses seven-spoke wheels also fitted to the Asterope. Its GTA IV exterior extras remain on GTA V models, including a front lip, alternative sunroof panels, roof racks and a spoiler above the rear window. Spoiler-equipped examples carry a "Twin Turbo" badge, although the car keeps its turbocharged inline-four engine and five-speed transmission. In GTA V, it uses all-wheel drive.

In GTA V and Online, Stratums are found on Nowhere Road in Sandy Shores and commonly travel around Sandy Shores and the Grand Senora Desert. They also sometimes appear around Vinewood Hills, while Online adds examples parked at The Diamond Casino & Resort. In Grand Theft Auto VI, the rear of a Stratum is visible at a distance in the first trailer's opening shot, moving along a busy freeway in Hamlet near the Leonida Penitentiary.