Opel Astra L

Automatic transmission fluid capacity & service interval

The Opel Astra L uses automatic transmission fluid with a dry fill capacity of 6 liters and a service fill capacity ranging from 2.5 to 3.5 liters. The data covers 5 different configurations of the model.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
Astra L 1.2 Turbo (81 kW), HNP (2021- )
  • Use: Normal
  • Capacity 6 liter (Dry fill)
  • Capacity 2,5-3,5 liter (Service fill)
  • Code: ATN8 8/1
Astra L 1.2 Turbo (96 kW), HNS (2021- )
  • Use: Normal
  • Capacity 6 liter (Dry fill)
  • Capacity 2,5-3,5 liter (Service fill)
  • Code: ATN8 8/1
Astra L 1.5 Diesel (96 kW), YHZ (2021- )
  • Use: Normal
  • Capacity 6 liter (Dry fill)
  • Capacity 2,5-3,5 liter (Service fill)
  • Code: ATN8 8/1
Astra L HYBRID (133 kW), DGX (2021- )
  • Use: Normal
  • Capacity 6 liter (Dry fill)
  • Capacity 2,5-3,5 liter (Service fill)
  • Code: eATN8 8/1
Astra L HYBRID (165 kW), DGY (2021- )
  • Use: Normal
  • Capacity 6 liter (Dry fill)
  • Capacity 2,5-3,5 liter (Service fill)
  • Code: eATN8 8/1

Additional Notes

  • Across all five Opel Astra L configurations covered here, the automatic transaxle dry fill capacity is 6 liters, a figure that represents the total fluid volume required when filling a completely drained or rebuilt unit from empty.
  • The service fill capacity is listed as a range of 2.5 to 3.5 liters for every configuration, reflecting the variable amount of fluid that remains in the torque converter and passages after a standard drain, meaning the actual refill quantity falls somewhere within that window depending on how thoroughly the unit drains.
  • The gap between the 6-liter dry fill and the 2.5-3.5 liter service fill range illustrates that a routine fluid change does not evacuate the full system volume, since a significant portion stays retained in the transmission during normal service.
  • All five configurations, spanning the 1.2 Turbo 81 kW (HNP), the 1.2 Turbo 96 kW (HNS), the 1.5 Diesel 96 kW (YHZ), the Hybrid 133 kW (DGX), and the Hybrid 165 kW (DGY), share identical dry and service fill figures, indicating a common automatic transaxle unit across the petrol, diesel, and hybrid variants of the Astra L.
  • The specifications are assigned a normal use condition for all five configurations, meaning the listed service fill range of 2.5 to 3.5 liters applies specifically under standard operating circumstances rather than a more demanding use profile.
  • Each entry is classified as a transaxle rather than a standalone transmission, which is consistent with a front-wheel-drive layout where the gearbox and final drive share a common housing and fluid circuit.

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