Engine Opel Z16SE

Engine Opel Z16SE

The Z16SE engine is an 84-horsepower 1.6-liter engine, which appeared with the release of the Opel Astra G, and is paired with an automatic and a manual transmission. Compared to its predecessor, the Z16SE has a completely different intake manifold, a changed cylinder head, a new valve cover gasket, completely different pistons and a completely changed cylinder-piston group.

The environmental standards of the engine have been brought up to Euro-4 indicators. The 8-valve engine was produced until 2004, after which it was replaced with a 16-valve analogue. Decoding of marking Z16SE:

  • Z – Euro 4 engine;
  • 16 – 1.4 liters;
  • S – Compression ratio 9.5-10.0: 1;
  • E – multiport fuel injection system.


Manufacturer Szentgotthard engine plant
Also called Z16SE
Production years 2000-2004
Cylinder block alloy cast iron
Fuel system injector
Configuration inline
Number of cylinders 4
Number of valves 8
Piston stroke, mm 81.5
Cylinder bore, mm 79
Compression ratio 9.6
Displacement, cc 1598
Power output, hp 84/5400
Torque output, Nm / rpm 138/2600
Fuel type 95
Euro standards Euro 4
Fuel consumption, L/100 km (for Opel Astra G)
— city
— highway
— combined
Oil consumption, gr/1000 km up to 600
Recommended engine oil 0W-30, 0W-40, 5W-30, 5W-40, 5W-50, 10W-40, 15W-40
Engine oil capacity, liter 3.25
Oil change interval, km 15000

Engine Opel Z16SE under the hood

Frequent problems

  • the main problem of this engine is in the oil-maker and de-carbonization does not help it for a long time;
  • this issue can be fundamentally resolved only with the help of a full-fledged overhaul;
  • the catalyst degrades very quickly, and its dust is sometimes sucked into the cylinders;
  • the timing belt runs quietly up to 100 – 120 thousand km and when it breaks, the valve does not bend.

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