The Toyota 1MZ-FE is a 3.0-liter V6 engine from Toyota’s MZ engine family, engineered for smooth performance and quiet operation. It features an aluminum alloy block with DOHC (dual overhead camshaft) and 24 valves, along with a die-cast aluminum intake manifold. Earlier versions of the 1MZ used a fixed valve timing setup, while later models incorporated VVT-i (Variable Valve Timing with intelligence) to improve fuel efficiency, emissions, and power delivery. The engine produces between 190 and 210 horsepower, with torque figures ranging from 195 to 220 lb-ft, depending on the specific model and application. It was designed for mid-size and luxury vehicles, prioritizing refinement and efficiency over high-end performance.

The 1MZ-FE was widely used in Toyota and Lexus vehicles throughout the late 1990s and early 2000s, including the Toyota Camry, Avalon, Sienna, Solara, and Highlander, as well as the Lexus ES 300 and RX 300. It was typically paired with automatic transmissions in front-wheel-drive or all-wheel-drive layouts. Known for its smooth and quiet operation, the 1MZ-FE became a popular choice for family sedans and crossovers. While it was eventually succeeded by the more powerful and efficient 3MZ-FE and 2GR-FE engines, the 1MZ remains respected for its reliability and refinement, especially when maintained properly—though earlier non-VVT-i versions were occasionally prone to issues like oil sludge buildup if oil changes were neglected.