Vehicle database
MERCEDES-BENZ EQS-Class Sedan
V297 / V295 / 2023-2026 / 4-door Sedan / Sedan
Global (including Europe, North America, China)Global (variations in battery size and motor output depending on region)Coverage: expanded
Year and trim selector
Choose the exact year and trim to see engine, oil and service details.
2023 MERCEDES-BENZ EQS-Class Sedan M1U/M3U (V297)
V297 / M1U, M3U / Fully electric powertrain with variants including single motor rear-wheel drive and dual motor all-wheel drive configurations, with substantial differences depending on market and battery size.
GoldOpen details
Oil type: Electric drive unit lubricated with specific synthetic fluids; see Mercedes-Benz service documentationOil capacity: Approx. 6.7 liters of synthetic lubricant for drive units; service-fill only, no filter on electric motorsRelated: M1U (single motor RWD), M3U (dual motor AWD)
2026 MERCEDES-BENZ EQS-Class Sedan M256e 4MATIC/M256e RWD (V295)
V295 / M256e 4MATIC, M256e RWD / Pure electric powertrain with permanent magnet synchronous motors, dual motor AWD or single motor RWD configurations.
GoldOpen details
Oil type: Electric motor bearing oil (service per Tesla or approved replacement)Oil capacity: N/A for electric motors; coolant used for thermal management (approx 10-15 liters coolant depending on system)Related: V295 EQS platform, M256e electric motor
Engine codes by year
| Year | Trim | Engine codes | Displacement | Fuel system |
|---|---|---|---|---|
| 2023 | technical-profile | M1U, M3U | Electric motor(s) – no displacement | N/A (battery electric vehicle) |
| 2026 | technical-profile | M256e 4MATIC, M256e RWD | Electric motors, no internal combustion displacement | N/A - Electric vehicle |
Oil capacity by engine
| Year | Engine codes | Oil type | Oil capacity | Fluid |
|---|---|---|---|---|
| 2023 | M1U, M3U | Electric drive unit lubricated with specific synthetic fluids; see Mercedes-Benz service documentation | Approx. 6.7 liters of synthetic lubricant for drive units; service-fill only, no filter on electric motors | Specific synthetic fluid lubricating drive units, change interval per Mercedes-Benz schedule |
| 2026 | M256e 4MATIC, M256e RWD | Electric motor bearing oil (service per Tesla or approved replacement) | N/A for electric motors; coolant used for thermal management (approx 10-15 liters coolant depending on system) | Sealed unit, no regular fluid change required |
Technical specifications
- Engines: M1U, M3U, M256e 4MATIC, M256e RWD
- Transmissions: None, Single speed fixed gear transmission on all variants, Specific synthetic fluid lubricating drive units, change interval per Mercedes-Benz schedule, None - Single speed reduction gear, Sealed unit, no regular fluid change required
- Tire sizes: 245/45 R21, 275/40 R21, 265/35 R22, 245/45R21, 275/40R22, 315/35R22 depending on trim and options
- Bolt pattern: Verify by exact trim and wheel package
- Wheel torque: Verify by VIN and wheel package
- Battery: Verify by engine, market and equipment package
Fluids and service data
- Engine oil: Electric drive unit lubricated with specific synthetic fluids; see Mercedes-Benz service documentation / Electric motor bearing oil (service per Tesla or approved replacement)
- Transmission fluid: Specific synthetic fluid lubricating drive units, change interval per Mercedes-Benz schedule / Sealed unit, no regular fluid change required
- Coolant: Approx. 12 liters (battery and power electronics cooling system) / Approx 10-15 liters, varies by region and battery pack size
- Brake fluid: DOT 4 or equivalent, replaced per maintenance schedule / DOT 4 (specified by Mercedes-Benz, follow regional service schedules)
Known problems
- Battery degradation over time under extreme conditions
- Electronic and software updates required for optimum performance
- Battery degradation in extreme climates
- High voltage system issues rare, require certified service