2016–2026 Mercedes-Benz GLE Oil Type & Capacity Guide

The Mercedes-Benz GLE has spanned 11 model years across two generations, four major engine families, and a fundamental shift in how Mercedes thinks about oil. A 2016 GLE 350 with the M276 V6 doesn’t take the same oil as a 2026 GLE 350 with the M254 inline-four. A 2018 AMG GLE 63 S runs on a different oil grade than a 2024 AMG GLE 63 S — even though both are 4.0L+ biturbo V8s.

This guide is organized by engine, with the trims that use each engine listed alongside. If you know your GLE’s engine, the oil specifications follow directly. If you’re not sure, the trim name will tell you which engine you have.

A Decade-Plus of GLE: Two Generations, Many Engines

The GLE has gone through two distinct chassis generations and one mid-cycle facelift in the 2016–2026 window:

These aren’t cosmetic differences. Each generation brought new engines, new oil specifications, and new service expectations. The right oil for your vehicle depends on which generation you’re driving.

How Mercedes-Benz Oil Specifications Have Evolved

Three things changed between 2016 and 2026 that directly affect your GLE’s oil:

• Engine architecture shrunk and electrified. The W166 ran V6s and V8s as standard. The W167 introduced 2.0-liter inline-fours and 3.0-liter inline-sixes with 48-volt mild hybrid systems, and the 2024 facelift added a plug-in hybrid using the I4. Smaller, electrified engines run at higher specific output, which changes thermal demands on the oil.
• MB-Approval specifications evolved. The W166-era GLEs primarily used MB 229.5 specification oils — typically 5W-40 full synthetic. The W167 introduced MB 229.71 — a newer, lower-viscosity specification paired with 0W-20 full synthetic. Important nuance: the lighter MB 229.71 / 0W-20 spec applies primarily to the inline-four (M254) GLE 350 and GLE 450e PHEV. The inline-six and V8 engines retained heavier-viscosity oils on MB 229.5-family specifications.
• Emissions equipment got more sophisticated. Newer GLEs include gasoline particulate filters and refined catalytic converters that require low-SAPS oils (low sulfated ash, phosphorus, sulfur) — the precise reason MB-Approval specifications matter and why generic store-shelf oils don’t qualify.

W166 First-Generation Oil Specifications (2016–2019)

The 2016–2019 GLE lineup centered on V6 and V8 engines with the AMG variants serving up brutal acceleration via the legendary M157 5.5-liter twin-turbo V8. Five engines powered the entire lineup:

A few things worth knowing about W166-era GLEs:

• All three M276 V6 variants share the same 7-liter oil capacity — but the AMG-tuned biturbo versions ran higher boost pressures, so the oil works harder.
• The AMG GLE 63 / 63 S used the M157 5.5L V8, the predecessor to today’s 4.0L M177. It’s a thirstier engine for oil (8.5L vs. 7L for the V6s) and ran 0W-40 historically.
• US GLE diesel availability ended after 2016. If you have a 2017+ W166 GLE, it’s almost certainly gasoline.

W167 Second-Generation Pre-Facelift Oil Specifications (2020–2023)

The 2020 redesign was an engineering reset. Mercedes pulled the V6 from the GLE entirely (still available in other models) and built the lineup around the all-new M264 inline-four and M256 inline-six. AMG retained V8 power via the M177:

Notes for W167 pre-facelift owners:

• The M264 was a relatively short-lived engine — Mercedes phased it out in favor of the M254 starting around 2024.
• The M256 inline-six was an entirely new architecture for Mercedes — designed specifically for 48-volt mild hybrid integration with a dry-sump oiling system.
• The M176 V8 (in the GLE 580) and the M177 V8 (in the AMG GLE 63 S) share the same 4.0-liter displacement but are different engines. The M176 is the production V8. The M177 is the handcrafted AMG version, hand-built by a single AMG technician.
• Note for early W167 owners: Mercedes updated some specifications during the 2022–2024 service period. Check your owner’s manual or our Service Center for VIN-specific guidance.

W167 Second-Generation Facelift Oil Specifications (2024–2026)

The 2024 facelift refreshed the W167 with new lighting, technology, a new plug-in hybrid variant, and an oil-specification update on the 4-cylinder applications. Five engine families now serve seven trims:

The headline change in this generation: the GLE 350 moved to the new M254 inline-four (replacing the M264), bringing MB 229.71 / 0W-20 oil with it — a meaningful viscosity drop for the 4-cylinder applications. The M254-based GLE 450e PHEV uses the same lighter oil. The 3.0L M256 inline-six in the GLE 450 retained its earlier MB 229.51 / 229.52 specification, typically 0W-40 or 5W-40 viscosity. Mercedes continues to recommend the heavier oil for the inline-six’s higher specific output and dry-sump oiling system.

The V8 engines (GLE 580 and the AMG variants) are evolving across model years, and the right answer for your specific 2024–2026 V8 depends on production date, market, and Mercedes service updates. For these trims, consult your owner’s manual or contact our Service Center directly. Guessing on V8 oil grade is not worth the risk.

Understanding Mercedes-Benz Oil Approval Specifications

Mercedes-Benz uses its own oil approval system — MB-Approval (MB) specifications — as the primary standard for all Mercedes engines worldwide. While oils may also carry API or ILSAC certifications (the standards more common in domestic and Asian-brand vehicles), MB-Approval is what Mercedes engineers tested against, and it’s what the manufacturer requires for warranty compliance.

The specifications you’ll see on a 2016–2026 GLE oil container:

• MB 229.5 — Older, broader specification. Common 5W-40 full synthetic. Used on W166 V6s, V8s, and many AMG applications.
• MB 229.51 / 229.52 — Mid-SAPS specifications used on engines with particulate filters. Common across W166 and W167 applications, including the M256 inline-six. Available in 5W-30, 5W-40, and 0W-40 viscosities.
• MB 229.61 / 229.71 — Newer, low-SAPS, low-viscosity specifications optimized for fuel economy. MB 229.71 is the preferred specification on the 2024+ GLE 350 (M254) and GLE 450e (M254 + electric), paired with 0W-20.

Common mistake: confusing MB 229.5 (no second digit) with MB 229.51 (with the .51). They are NOT the same. MB 229.5 is full-SAPS; MB 229.51 is mid-SAPS. Using the wrong one can affect your particulate filter and catalytic converter over time. Always verify the exact specification on the oil container matches what your engine requires.

Why Full Synthetic Oil Matters for Every GLE

Every GLE in the 2016–2026 window was engineered for full synthetic oil. Conventional and synthetic-blend oils don’t meet any of the MB-Approval specifications above — using them can compromise turbocharger lubrication, emissions equipment, and on newer GLEs that are still under warranty, can affect coverage. The cost difference between conventional oil and a true MB-approved full synthetic is small relative to the cost of a Mercedes engine repair.

How to Check Oil — Dipstick or Electronic Monitoring?

This is one of the bigger differences between W166 and W167 GLEs:

W166 First-Generation (2016–2019): Most W166 GLE engines retained a traditional oil dipstick, accessible under the hood. Standard procedure: warm engine, park on level ground, wait a few minutes, pull the dipstick, wipe, reinsert, then read.

W167 Second-Generation (2020–2026): No dipstick. Mercedes shifted entirely to electronic oil level monitoring via the driver’s display. To check oil level on a W167 GLE:

1. Park on level ground and let the engine cool for 5–10 minutes after driving.
2. Turn ignition to position 2 (or press the start button without depressing the brake).
3. Use the steering wheel controls to navigate to the Service menu.
4. Select Oil Level.

The display will show your current level — typically as “OK,” “Add 1 qt,” or a similar message. Only add the amount the system specifies, and only use MB-approved oil for your engine. Overfilling can cause engine damage just as readily as running low.

ASSYST Plus and Service Intervals

Every GLE in the 2016–2026 window uses Mercedes-Benz’s intelligent service system called ASSYST Plus (Active Service System Plus). Rather than fixed mileage intervals, ASSYST Plus monitors driving conditions, oil quality, and time elapsed to determine when service is actually needed. The system displays one of two service codes:

• Service A — your first scheduled service (and every other service after that), typically at approximately 10,000 miles or one year, whichever comes first. Service A includes synthetic engine oil and oil filter replacement, fluid level checks, brake inspection, tire pressure adjustment, and a maintenance counter reset.
• Service B — your second scheduled service (and every other after that), typically at the next 10,000-mile interval. Service B includes everything in Service A plus cabin air filter replacement and brake fluid service.

After Service B, the GLE alternates between Service A and Service B at roughly 10,000-mile intervals.

Driving conditions affect timing. Frequent short trips through stop-and-go traffic in El Cajon or San Diego can accelerate oil degradation, and ASSYST Plus may shorten the interval. Highway-heavy driving may extend it. The system adapts — that’s the point.

Why the First Oil Change Matters

If your GLE is brand new, the first oil change is more than routine. During break-in, microscopic metal particles shed from precision-machined components — this is normal. The first oil change flushes them out and starts your GLE on a clean foundation of fresh synthetic oil and a new filter.

Schedule Your GLE Oil Service at Mercedes-Benz of El Cajon

Mercedes-Benz of El Cajon’s factory-trained technicians service every GLE — from a 2016 GLE 350 with the M276 V6 to a 2026 AMG GLE 63 S with the handcrafted M177. We use genuine Mercedes-Benz approved oils matched to your specific engine and model year, OEM oil filters, and the same diagnostic equipment Mercedes-Benz Engineering specifies. ASSYST Plus is reset properly so your next interval is tracked accurately.

We serve drivers from El Cajon, La Mesa, San Diego, Escondido, Bonita, and Chula Vista who want their GLE serviced by a team that knows the brand from the engineering up.

Important Information

Engine oil specifications, capacities, and recommendations may vary by individual vehicle configuration, production date, regional market, and Mercedes-Benz technical updates. Information in this article is provided for general guidance and reference only. Capacity figures listed are approximate and may vary slightly by production run. Always consult your vehicle’s owner’s manual or contact our Service Center for the precise specifications for your VIN. Vehicle warranty coverage is subject to the terms outlined in your Mercedes-Benz New Vehicle Limited Warranty (where applicable) and is contingent on adherence to manufacturer-specified maintenance, including the use of approved fluids and parts. See your warranty booklet for complete details, or contact our Service Department for specific warranty questions.