Toyota ZR engine

The Toyota ZR engine is a family of straight-four, 16-valve, all-aluminium and water-cooled gasoline engines with a die-cast aluminium block and variable valve timing, developed by Toyota Motor Corporation and produced from 2007. Displacements run from 1.6 to 2.0 litres. Most of the family has Toyota dual VVT-i, which optimizes both intake and exhaust valve timing, and the ZR was the first family to use the Valvematic system, which first appeared on the Noah and Voxy in 2007 and then on the European Avensis in 2009. It replaced the 3ZZ-FE in most applications and is fitted to cars such as the Allion, Wish and C-HR, as well as Lexus models sold in some markets.