Engine Opel A16XER/Z16XER

Engine Opel A16XER/Z16XER

A16XER is probably the most common 1.6 liter Opel engine. This motor has been produced since 2005 by the GM plant, which is located in Hungary, the city of Szentgotthard. It is also produced in South Korea, where this motor is called f16d4 and is installed on the sister brand Chevrolet. Unlike its counterpart Z16XER, it complies with the more modern Euro-5 environmental standards. The injector A16XER is actually assembled from 2 other units: the Z16HEP and the cylinder head, which he got from the 1.8 liter Z18XER. The finished engine received a volume of 1.6 liters, and its power was 115 hp.


Manufacturer Plant Szentgotthard
Also called A16XER/Z16XER
Production years 2005 – 2010
Cylinder block alloy cast iron
Fuel system injector
Configuration inline
Number of cylinders 4
Valves per cylinder 4
Piston stroke 81,5 mm
Cylinder bore 79 mm
Compression ratio 10,8
Displacement 1598 cc
Power output 115 hp /6000 rpm
Torque output 155 Nm / 4000 rpm
Fuel type 95
Euro standards Euro 5/4
Fuel consumption city 8,3 l. | highway 5,1 l. | combined 6,3 L/100 km
Oil consumption up to 0,6 L/1000 km
Recommended engine oil Aster/Insignia 1.6 Z16XER/A16XER: 5W-30 / 5W-40 / 0W-30 / 0W-40
Engine oil capacity, liter A16XER: 4.5 l.
Amount of engine oil for replacement 4-4,5 l.
Oil change interval every 15000 km
In urban conditions every 7500 km
Engine lifespan A16XER/Z16XER Aster:
1. official information
2. real 200-250 thousand km

Engine Opel A16XER/Z16XER under the hood

Explanation of Z16XER marking

  • Z – Euro 4 engine;
  • 16 – volume 1.6 l;
  • X – Compression ratio from 10 to 11.5: 1;
  • E – multi-point fuel injection system;
  • R – increased power.

Frequent problems

  • the first years of production there were defective camshafts and leaks on the jumpers;
  • further, the most common failure was the failure of phase regulators;
  • regularly there are oil leaks from the heat exchanger with its getting into antifreeze;
  • the crankcase ventilation system, or rather its membrane, does not shine with reliability;
  • a lot of problems are caused by the electrician, especially the ignition module and the capricious ECU.

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