Porsche 911 Coupé, 992 (EU)

Manual transmission fluid capacity & service interval

Porsche 911 Coupé, 992 (EU) manual transmission fluid capacity ranges from 3,2 to 3,3 liters. Service intervals occur at 160000 km or 144 months. The data covers 3 configurations.

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

TypeSpecifications
911 S/T (2023- )
  • Use: Normal
  • Capacity 3,3 liter (Dry fill)
  • Capacity 3,2 liter (Service fill)
  • Change 160000 km/ 144 months
  • Code: GC4.90 6/1
911 GT3 (2021- )
  • Use: Normal
  • Capacity 3,3 liter (Dry fill)
  • Capacity 3,2 liter (Service fill)
  • Change 160000 km/ 144 months
  • Code: GC4.90 6/1
911 GT3 Touring (2021- )
  • Use: Normal
  • Capacity 3,3 liter (Dry fill)
  • Capacity 3,2 liter (Service fill)
  • Change 160000 km/ 144 months
  • Code: GC4.90 6/1

Additional Notes

  • The Porsche 911 GT3, 911 GT3 Touring, and 911 S/T all share an identical manual transaxle fluid capacity of 3.3 liters for a dry fill and 3.2 liters for a service fill.
  • A dry fill figure of 3.3 liters represents the total fluid volume required when filling a completely drained or rebuilt transaxle, while the service fill of 3.2 liters reflects the slightly lower volume needed during a routine fluid change where residual fluid remains in the unit.
  • The 100 ml difference between the dry fill and service fill capacities across all three configurations is consistent, indicating a uniform transaxle design shared among the GT3, GT3 Touring, and S/T variants.
  • The fluid change interval for all three configurations is rated at 160,000 km or 144 months under normal use conditions, with 144 months equating to 12 years.
  • A 160,000 km service interval for manual transmission fluid is notably long and reflects a sealed or low-maintenance transaxle design rather than a frequent-service unit.
  • The 911 S/T carries a starting year of 2023, making the fluid change interval and capacity specifications applicable from that model year onward within the data set.
  • All three configurations are identified with a transaxle layout, meaning the manual gearbox is mounted at the rear axle rather than directly behind the engine, which is a characteristic arrangement in rear-engined Porsche 911 platforms.