Mercedes-Benz GLS-Class, X166 (EU)

Automatic transmission fluid capacity & service interval

Mercedes-Benz GLS-Class, X166 (EU) uses automatic transmission fluid with a capacity range of 7,1 to 10 liters. The service interval is 125000 km or 60 months. The data covers 15 configurations.

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

TypeSpecifications
GLS 350 d 4MATIC, 166.823/824 (2017-2019)
  • Use: Normal
  • Capacity 9 liter (Dry fill)
  • Change 125000 km/ 60 months
  • Code: 722.9xx 7/1
GLS 350 d 4MATIC, 166.823/824 (2015-2017)
  • Use: Normal
  • Capacity 9 liter (Dry fill)
  • Change 125000 km/ 60 months
  • Code: 722.9xx 7/1
GLS 400 4MATIC, 166.856 (2015-2019)
  • Use: Normal
  • Capacity 9 liter (Dry fill)
  • Change 125000 km/ 60 months
  • Code: 722.9xx 7/1
GLS 400 4MATIC, 166.856 (2015-2019)
  • Use: Normal
  • Capacity 10 liter
  • Change 125000 km/ 60 months
  • Code: 725.031 9/1
GLS 450 4MATIC, 166.864 (2015-2019)
  • Use: Normal
  • Capacity 9 liter (Dry fill)
  • Change 125000 km/ 60 months
  • Code: 722.9xx 7/1
GLS 450 4MATIC, 166.864 (2015-2019)
  • Use: Normal
  • Capacity 10 liter
  • Change 125000 km/ 60 months
  • Code: 725.031 9/1
GLS 450 4MATIC, 166.864 (2015-2019)
  • Use: Normal
  • Capacity 10 liter
  • Change 125000 km/ 60 months
  • Code: 725.032 9/1
GLS 500 4MATIC, 166.871/873 (2015-2019)
  • Use: Normal
  • Capacity 9 liter (Dry fill)
  • Change 125000 km/ 60 months
  • Code: 722.9xx 7/1
GLS 500 4MATIC, 166.871/873 (2015-2019)
  • Use: Normal
  • Capacity 10 liter
  • Change 125000 km/ 60 months
  • Code: 725.031 9/1
GLS 500 4MATIC, 166.871/873 (2015-2019)
  • Use: Normal
  • Capacity 10 liter
  • Change 125000 km/ 60 months
  • Code: 725.032 9/1
GLS 550 4MATIC, 166.873 (2015-2019)
  • Use: Normal
  • Capacity 9 liter (Dry fill)
  • Change 125000 km/ 60 months
  • Code: 722.9xx 7/1
GLS 550 4MATIC, 166.873 (2015-2019)
  • Use: Normal
  • Capacity 10 liter
  • Change 125000 km/ 60 months
  • Code: 725.031 9/1
GLS 550 4MATIC, 166.873 (2015-2019)
  • Use: Normal
  • Capacity 10 liter
  • Change 125000 km/ 60 months
  • Code: 725.032 9/1
Mercedes-AMG GLS 63 4MATIC, 166.875 (2015-2019)
  • Use: Normal
  • Capacity 9 liter (Dry fill)
  • Change 125000 km/ 60 months
  • Code: 722.905 7/1
Mercedes-AMG GLS 63 4MATIC, 166.875 (2015-2019)
  • Use: Normal
  • Capacity 7,1 liter (Dry fill)
  • Change 125000 km/ 60 months
  • Code: 722.931 7/1

Other Systems