Toyota NZ engine

The Toyota NZ engine family is a series of straight-four piston engines. It uses aluminium open-deck blocks and DOHC cylinder heads, with sequential multi-point fuel injection and four valves per cylinder with VVT-i. The engines are built at the Kamigo plant in Toyota, Aichi, Japan, at Siam Toyota Manufacturing in Chonburi, Thailand, where the 1NZ-FE is made for the Yaris and Vios, and at Indus Motor Company in Karachi, Pakistan, where the 2NZ-FE is made for the Corolla. The 1NZ-FXE hybrid version, which first appeared in 1997, runs a simulated Atkinson cycle with a high physical compression ratio and a delayed inlet valve closing, and is used with the Hybrid Synergy Drive in the Prius.