The Toyota 1NZ-FE is a 1.5-liter inline-four engine from Toyota’s NZ engine family, designed for fuel efficiency, compact packaging, and long-term reliability. It features an aluminum alloy block with DOHC (dual overhead camshaft), 16 valves, and VVT-i (Variable Valve Timing with intelligence) on the intake camshaft to enhance fuel economy and optimize performance across a range of engine speeds. With a relatively high compression ratio and efficient combustion design, the 1NZ-FE produces around 105 to 110 horsepower and 100 to 105 lb-ft of torque, depending on the vehicle application. It is also known for its low weight, quiet operation, and minimal maintenance needs, making it ideal for compact vehicles.

The 1NZ-FE engine has been widely used in Toyota’s small car lineup globally, including the Toyota Vios, Yaris, Belta, Platz, and Echo, as well as the Toyota Prius C (1NZ-FXE hybrid variant). In these applications, the engine is typically mated to either a manual, automatic, or CVT transmission and is known for delivering excellent fuel economy, often exceeding 40 MPG in certain models. In hybrid form (1NZ-FXE), it operates on the Atkinson cycle for even greater efficiency. Its reputation for durability and low cost of ownership has made the 1NZ a favorite among daily drivers, fleet vehicles, and taxis in many parts of the world.