Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2021 M440i xDrive.
Equipped with an Automatic (S8) transmission and delivering EPA fuel economy ratings of 22/31/25 mpg, the 2021 BMW M440i xDrive establishes a clear mechanical baseline for researchers. This model year sits within a reliability history marked by 5 recalls and 3 total owner complaints, with the engine cited as the top complaint area. This context indicates that while the total owner complaints number 3, the identification of the engine as the top complaint area necessitates careful scrutiny of mechanical records during evaluation.
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 11428583896. 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 | 11428583896 alt 11428583897 |
| Engine air filter | 13718635102 |
| Spark plug | 12122455258 |
| Battery | 61217555719 alt 61216806755 |
| Front wiper blades | 61619478361 |
| Thermostat | 11539494424 alt 11539494425 |
| Cabin air filter | 64119382885 alt 64119382886 |
Engine, drivetrain, dimensions and economy.
| Transmission | Automatic (S8) |
| Overall length | 187.8 in |
| Overall width | 72.8 in |
| Overall height | 54.3 in |
| Wheelbase | 112.2 in |
| Curb weight | 3977 lb |
| Track (front / rear) | 62.2 / 62.6 in |
| Weight distribution (front / rear) | 54/46 |
| EPA city / highway / combined | 22 / 31 / 25 mpg |
| Drivetrain | All-Wheel Drive |
| Recommended fuel | Premium Gasoline |
Capacities, torques and tune-up values from the factory service manual.
This engine BMW Hypoid Axle Oil G4 in the differential. The firing order is 1-5-3-6-2-4.
| Automatic Transmission Fluid | ATF3 |
| Automatic Transmission Fluid Capacity | 9.8 qt |
| Clutch Fluid | DOT 4 |
| Differential Gear Oil | BMW Hypoid Axle Oil G4 |
| Power Steering Fluid | ATF |
| Cylinder Head Instructions | Only use new bolts. |
| Oil Pump to Cylinder BLock Bolts/Studs | 168.0 inch lbs. ft-lbs |
| Differential Fill Plug | Final Drive: Use new plug: 44.0 ft-lbs |
| Cylinder Firing Order | 1-5-3-6-2-4 |
| Refrigerant | R1234yf |
| Oil Group | PAG |
| Oil Type | 46YF |
| 1 | Bolts 1-14 | 22 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 M440i xDrive dominate in one area — the engine, 1 of 3 reports (33%), well ahead of the next concern. None of this vehicle's 5 recall campaigns target the engine, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 1 of the reports describe a crash and 1 a fire — a small share of the total, but worth weighing against the engine 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 3 complaints on record, top 3 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 2 of 5 campaigns on record for this vehicle.
BMW of North America, LLC (BMW) is recalling certain 2021 2 Series (230i, 230i xDrive, M240i, M240i xDrive), 330e, 330e Xdrive, 4 Series Coupe (430i, 430i xDrive, M440i xDrive) M4 Coupe, M4 Competition Coupe, BMW 4… Remedy: Dealers will inspect the seat belt retractors (including the seat belts) and, if necessary, replace the retractors, free of charge. Owner notification letters were mailed on…
BMW of North America, LLC (BMW) is recalling certain 2021 M340i xDrive, M440i xDrive Coupe, 530i, 530i xDrive, 540i, 540i xDrive, 740Li, 740Li xDrive, 840i Gran Coupe, 840i xDrive Gran Coupe, X5 sDrive40i, X5 xDrive40i… Remedy: BMW will notify owners, and dealers will inspect the connection between the 48-Volt battery and the starter-generator assembly, replacing it if necessary, free of charge. The…
Showing 5 of 124 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| B010126 | 2026-05-06 | Engine | The EVAP systems purge (vent) valve limited warranty for defects in materials and / or… |
| B640422 | 2024-02-16 | Electrical System | An interference noise (groaning noise) can be heard from within the heating and… |
| B611305 | 2024-01-11 | Electrical System | The electrical system of BMW vehicles has been subject to an ongoing development process… |
| B360121 | 2024-01-08 | Steering | At low outside temperatures (below 40 degrees F) and slow driving speeds (i.e. when… |
| B610524 | 2024-01-05 | Electrical System | The Central Information Display goes black intermittently due to resets of the Head Unit… |
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.
NHTSA lists 5 recall campaign(s) for this model year. Check your specific vehicle by VIN.
EPA figures are 22 city / 31 highway / 25 combined mpg.