Mercedes-Benz GLE-Class, W166 (USA / CAN)

Additional Notes

• Across all Mercedes-Benz GLE-Class W166 variants covered, the front differential capacity is uniformly listed at 0.8 liter under normal use conditions, and the same figure applies whether the housing is standard or light alloy.
• The rear differential on the GLE 350 4MATIC (166.057) carries three distinct fixed capacity values depending on the unit fitted: 0.95 liter, 1.1 liter, and 1.2 liter, reflecting that multiple rear differential assemblies were used across the 2015-2019 production span.
• The same three rear differential capacity figures — 0.95 liter, 1.1 liter, and 1.2 liter — appear identically for the GLE 400 4MATIC (166.056), GLE 63 AMG (166.074), and GLE 63 S AMG (166.075), indicating a shared rear differential hardware range across those variants.
• The GLE 550 4MATIC (166.073) carries the same rear differential capacity options of 0.95 liter, 1.1 liter, and 1.2 liter, covering the 2015-2018 model years rather than the 2015-2019 span seen on the other variants.
• For the rear differential with a light alloy housing, no fixed volume is listed across any of the W166 variants. Instead, the specification states to fill up to the lower edge of the level plug opening, which is a fill-by-sight method rather than a measured quantity.
• The fill-to-level-plug method used for light alloy rear differential housings accounts for the fact that fluid expansion and housing geometry can make a fixed volume figure unreliable, making the plug opening the practical reference point for a correct fill.
• The front differential light alloy housing variant retains a fixed 0.8 liter capacity across all five W166 configurations, in contrast to the rear light alloy housing, which uses the level plug method instead of a stated volume.
• All differential fluid specifications across the W166 lineup are listed under normal use conditions only, with no separate capacity or interval entries for severe use conditions in the provided data.