Toyota AZ engine

In this dossier

• VersionsEach version, and every model that had it
• Watch out 3 warningsKnown faults and what to check
• OwningMaintenance and what owners say

The story

History: facts, each with its source

Toyota built the AZ fours from 2000 to 2019. They replaced the S engines and were followed by the AR. Wikipedia lists the 2.4L 2AZ-FE in the Highlander from 2000 to 2007 and the RAV4 from 2004 to 2012, and the 2.0L 1AZ-FE in the RAV4 from 2000 to 2003.¹

Toyota extended the warranty on 2AZ-FE engines that burned too much oil, a program that covered about 1.7 million US vehicles and ended on 31 October 2016.¹

• Block: Aluminium with cast-in iron liners¹
• Valvetrain: Twin overhead cams driven by a chain, four valves per cylinder¹
• Balance shafts: Two, driven by a gear on the crankshaft¹

Sources

1. Wikipedia (AZ engine)