In 2006, the Highlander was offered with two engine options: a 2.4-liter four-cylinder and a 3.3-liter V6. The exact choice depended on trim level and market.
Engine options for the 2006 Highlander
The following are the two engine configurations that could power the 2006 Highlander, along with their typical outputs.
2.4-liter inline-4 (2AZ-FE)
Displacement: 2.4 L. Configuration: inline-four. This engine generally produced about 162–166 horsepower and around 160–164 lb-ft of torque, offering a balance of efficiency and everyday performance.
3.3-liter V6 (3MZ-FE)
Displacement: 3.3 L. Configuration: V6. This option delivered about 215 horsepower and roughly 220–222 lb-ft of torque, providing stronger acceleration and highway capability.
Summary
Bottom line: the 2006 Toyota Highlander could be equipped with either a 2.4-liter inline-4 (2AZ-FE) for better fuel economy or a 3.3-liter V6 (3MZ-FE) for stronger performance. Availability varied by market and trim.