Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2021 M850i xDrive.
The 2021 BMW M850i xDrive pairs an S8 automatic transmission with EPA fuel-economy ratings of 17/24/19 mpg and a lubrication system requiring 11.09 quarts of 0W-30 oil. Reliability data registers zero recalls and only one owner complaint—filed under the vague "Unknown Or Other" category—indicating virtually no systemic defect patterns. That sparse complaint record positions the 2021 model year at the stable end of the M850i xDrive reliability spectrum, offering researchers a clean datum for mechanical longevity.
Fluid capacities, tune-up values and fuel economy at a glance.
Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.
From the factory this vehicle uses OE oil filter 11427583220. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.
| Engine oil filter | 11427583220 |
| Engine air filter | 13718699812 alt 13718699811 |
| Spark plug | 12120057704 |
| Battery | 61219394648 alt 61217604808 |
| Front wiper blades | 61619478909 |
| Thermostat | 11538632664 alt 11538685978 |
| Cabin air filter | 64115A29D99 alt 64115A1BDB7 |
Engine, drivetrain, dimensions and economy.
| Transmission | Automatic (S8) |
| EPA city / highway / combined | 17 / 24 / 19 mpg |
| Drivetrain | All-Wheel Drive |
| Recommended fuel | Premium Gasoline |
Capacities, torques and tune-up values from the factory service manual.
This engine holds 11.09 qt of 0W-30 engine oil, DOT 4 brake fluid. Torque lug nuts to 103 ft-lbs, the oil drain plug to Use new seal: 30.0 ft-lbs. The firing order is 1-5-4-8-6-3-7-2.
| Automatic Transmission Fluid | ATF3 |
| Automatic Transmission Fluid Capacity | GA8HP76Z |
| Brake Fluid | DOT 4 |
| Clutch Fluid | DOT 4 |
| Engine Coolant | Infiniti BASF Glysantin G40 Coolant |
| Engine Oil | 0W-30 |
| Engine Oil Capacity | 11.09 qt |
| Power Steering Fluid | ATF |
| Cylinder Head Instructions | Only use new bolts. |
| Exhaust Manifold to Cylinder Head Bolts | Use new nuts only. 11.0 ft-lbs |
| Engine Oil Pan Drain Plug | Use new seal: 30.0 ft-lbs |
| Oil Pump to Cylinder BLock Bolts/Studs | 18.0 ft-lbs |
| Differential Fill Plug | Final Drive: Use new plug: 44.0 ft-lbs |
| Lug Nuts | 103 ft-lbs |
| Transfer Case Fill Plug | Use a new plug: 44.0 ft-lbs |
| Transfer Case Drain Plug | 44.0 ft-lbs |
| Cylinder Firing Order | 1-5-4-8-6-3-7-2 |
| Refrigerant | R1234yf |
| Oil Group | PAG |
| Oil Type | 46YF |
| 1 | 22.0 ft. lbs., Step 2: 90°, Step 3: 140° | 22 ft. lbs |
| 1 | M6 Screw | 7.4 ft. lbs |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
Owner complaints about the 2021 BMW M850i xDrive dominate in one area — the unknown or other, 1 of 1 reports (100%), well ahead of the next concern. NHTSA has issued no recalls for this vehicle, so these are owner-reported concerns only. 0 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the unknown or other pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.
All 1 complaints on record, top 1 components.
Source: NHTSA Office of Defects Investigation complaint database.
No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.
Showing 5 of 9 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| MC340124 | 2024-03-28 | Electrical System | Due to an internal time offset in the communication of the control units fault entry… |
| B611305 | 2024-01-11 | Electrical System | The electrical system of BMW vehicles has been subject to an ongoing development process… |
| MC610522 | 2022-12-08 | Wheels | Due to a hardware change to the angular rate sensor, certain sub functions will not be… |
| SIB610321 | 2022-05-13 | Electrical System | BATTERY EMPTY DESPITE CHARGER. |
| MC610321 | 2022-03-18 | Electrical System | The motorcycle will not start. The vehicle battery is empty even though the battery… |
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.
Cross-vehicle references for the kinds of data on this page.
11.09 qt of BMW LongLife LL-01FE 0W-30 is recommended., per the factory manual.
NHTSA lists 0 recall campaign(s) for this model year. Check your specific vehicle by VIN.
EPA figures are 17 city / 24 highway / 19 combined mpg.