The Toyota MZ engine family is a V6 piston engine series. The MZ series has an aluminum engine block and aluminum DOHC cylinder heads. The cylinders are lined with cast iron. It uses MFI fuel injection, has 4 valves per cylinder and features a one-piece cast camshaft and cast aluminum intake manifold. The MZ family is a lightweight v6 engine of all aluminum design, using lighter weight parts than the heavier duty VZ block engines in an effort to lower production costs, decrease engine weight, decrease reciprocating weight, without sacrificing Toyota reliability.

They feature cast aluminum pistons with valve reliefs, and a coating. Normal rings, lighter weight rods, and a forged steel crankshaft.

1MZ-FE

The 1MZ-FE is a 3.0 L (2994 cc) engine. Bore is 87.5 mm and stroke is 83 mm. Output is 188-210 hp @ 5200-5400 RPM with 203-213 ft·lbf of torque at 4400 RPM. It has bucket tappets , and incorporates camshaft, and head designs for good economy, without an overall performance trade-off. It happens to be the world's first partial OBD-II compliant engine, and the world's first fully compliant OBD-II engine.

The 1MZ-FE was on Ward's 10 Best Engines list for 1996.

Applications:

• 1993–2004 Toyota Camry
• 1999–2003 Toyota Camry Solara
• 1996-2003 Lexus ES 300 & Toyota Windom (Japaneese domastic market)
• 1996 Toyota Avalon & 2000 Toyota Pronard (Avalon for Japaneese domastic market)
• 1997 Lexus RX300 & Toyota Harrier (Japaneese domastic market)
• 2000 Toyota Estima (Japaneese domastic market)

A different 1MZ-FE with VVT-i is used in the Avalon, Highlander and Camry. Output is 230 hp (172 kW) at 5800 RPM with 242 ft·lbf (328 N·m) of torque at 4400 RPM.

Applications:

• 2004 Toyota Avalon
• 2004 Toyota Highlander/Kluger
• 2002-2005 Toyota Camry
• 2002 Toyota Alphard (Japaneese domastic market)

Toyota 1MZ-FE engine

2MZ-FE

The 2MZ-FE is a 2.5 L (2496 cc) engine replacing the 4VZ-FE as the worldwide 2.5L V6. Bore is 87.5 mm and stroke is 69.2 mm. Output is 200 hp at 6000 RPM with torque of 180 ft·lbf at 4600 RPM.

Applications:

• Toyota Camry
• Toyota Windom (Japaneese domastic market)
• Toyota Mark II Qualis (Japaneese domastic market)

Toyota 2MZ-FE engine

3MZ-FE

The 3MZ-FE is a 3.3 L (3310 cc) version . Bore is 92 mm and stroke is 83 mm. Output is 225 hp with 240 ft·lbf of torque in the Toyota Camry. It also features VVT-i.

Applications:

• Toyota Camry SE V6
• Toyota Camry Solara
• Toyota Sienna
• Toyota Highlander
• Lexus RX 330
• Lexus RX 400h
• Lexus ES 330