Toyota GZ engine

The Toyota GZ engine family consists of a single model, the 1GZ-FE. This engine is used as the powerplant for the second generation Century limousine from 1997 to 2017.

Toyota GZ engine
Toyota's 1GZ-FE engine installed in the GZG50 Century
Configuration60° V12[1]
Displacement4,996 cc (304.9 cu in)
Cylinder bore81 mm (3.189 in)
Piston stroke80.8 mm (3.181 in)
Compression ratio10.5:1
Fuel systemElectronic port fuel injection
Fuel typeGasoline
Cooling systemWater-cooled
Power output
  • 206 kW (276 hp; 280 PS) (official)
  • 229 kW (308 hp; 312 PS) (actual, estimated)
Specific power
  • 41.2 kW (55.2 hp; 56 PS) per liter (official)
  • 45.9 kW (61.5 hp; 62.4 PS) per liter (actual, estimated)
Torque output481 N⋅m (355 lb⋅ft)
PredecessorToyota V engine (V8)
SuccessorToyota 2UR-FSE engine (V8)


The 1GZ-FE is a 4,996 cc (5.0 L) 48-valve DOHC V12 engine with variable valve timing (VVT-i). Bore is 81 mm and stroke is 80.8 mm, with a compression ratio of 10.5:1. The official power output advertised in Japan per the gentlemen's agreement is 206 kW (276 hp; 280 PS) at 5,200 rpm, though it was advertised as 220 kW (295 hp; 299 PS) in export markets. Peak torque of 481 N⋅m (355 lbf⋅ft) is at 4,000 rpm with over 400 N⋅m (295 lbf⋅ft) available from as little as 1200 rpm. The Electronic fuel-injection system is controlled by two ECUs, one for each bank of six cylinders. The engine is capable of running on either bank should a malfunction occur.[2]

In 2010 the standard engine was revised in order to meet tough fuel economy and emissions standards, reducing power slightly and peak torque to 460 N⋅m (339 lbf⋅ft) although this torque figure had been advertised in export markets since at least 2004.[3]



A version is available running on compressed natural gas which produces 190 kW (255 hp) and 405 N⋅m (299 lbf⋅ft).[4][5]


See alsoEdit


  1. ^ Cleveland, Bryce (2021-08-13). "Toyota 1GZ-FE: Everything You Need To Know". Dust Runners Automotive Journal. Retrieved 2021-10-18.
  2. ^ "トヨタ センチュリー | 安全装備 | 予防安全" [Toyota Century Safety Equipment Preventive Safety]. Goo-net (in Japanese). Archived from the original on 2015-05-08.
  3. ^ "センチュリー(トヨタ)のモデル・グレード別カタログ情報" [Century (Toyota) model· Catalog information by grade]. Goo-net (in Japanese). Retrieved 2017-10-15.
  4. ^ "TOYOTA CENTURY catalog - reviews, pics, specs and prices". Goo-net Exchange. Retrieved 2017-10-15.
  5. ^ "TOYOTA CENTURY, CNG CAR FLOOR SHIFT catalog - reviews, pics, specs and prices". Goo-net Exchange. Retrieved 2017-10-15.