Factory maintenance schedule OEM · verified
Normal service, condensed from the factory interval matrix.
| At 1,200 mi | Drive Axle Assembly (drain & refill) |
Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2021 M850i xDrive Gran Coupe.
The 2021 BMW M850i xDrive Gran Coupe is paired with an Automatic (S8) transmission and carries a service capacity of 11.09 quarts of 0W-30 engine oil, while its EPA ratings are listed at 17 mpg city, 24 mpg highway, and 19 mpg combined. On the reliability front, this model year sits at the low-incident end of the spectrum, logging exactly one owner complaint in the "Unknown Or Other" category and zero recalls. That minimal incident count establishes the 2021 vintage as a stable, low-risk reference point in the model's documented history.
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 | 61217604802 alt 61215B3F325 |
| Front wiper blades | 61619478909 |
| Thermostat | 11538632664 alt 11538685978 |
| Cabin air filter | 64115A1BDB6 alt 64115A29D99 |
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 |
Normal service, condensed from the factory interval matrix.
| At 1,200 mi | Drive Axle Assembly (drain & refill) |
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 Gran Coupe 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.