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2021 BMW 840i

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2021 840i.

Transmission Automatic (S8)

The 2021 BMW 840i is a luxury sedan that continues the brand’s tradition of combining refined styling with a responsive powertrain; it is equipped with a 6.8‑quart engine oil capacity and uses 0 W‑20 viscosity oil for optimal performance and efficiency. The automatic (S8) transmission delivers smooth shifts, while the EPA‑rated fuel economy of 22 mpg city, 29 mpg highway, and 25 mpg combined reflects its balance between power and economy. In the model’s reliability history, the 840i’s 2021 iteration has maintained the series’ reputation for solid durability, indicating that this year’s vehicle offers both dependable engineering and the hallmark refinement that researchers and owners expect.

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity6.8 qtOEM · verified

Engine oil type0W-20OEM · verified

Lug nut torque103 ft-lbsOEM · verified

EPA fuel economy22/29/25 mpgEPA · verified

Fitment & sizes

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.

Tail / brake / turnLAMPOEM · verified

Tire size18" Front: 245/45R18/XL 100H, Rear: 275/40R18/XL 103H; 19" 245/40R19/XL 98H; 20" Front: 245/35R20/XL 95Y, Rear: 275/30R20/XL 97YOEM · verified

Wheel / rim18" Front: 8, Rear: 9; 19" 8; 20" Front: 8, Rear: 9; Optional: 19" Front: 8, Rear: 9 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter	11428583896 alt 11427826799
Engine air filter	13718577170
Spark plug	12122455258
Battery	61215B3F325 alt 61217604808
Front wiper blades	61619478909
Thermostat	11539494424 alt 11539494425
Cabin air filter	64115A1BDB6 alt 64115A29D99

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

Transmission

Automatic (S8)

Ratings & economy EPA / vPIC

EPA city / highway / combined	22 / 29 / 25 mpg
Drivetrain	Rear-Wheel Drive
Recommended fuel	Premium Gasoline

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

Independent road tests for the 840i of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

4.4–4.7 sec0–60 mph (tested)quickest 4.40 sec — 2020 xDrive Gran Coupe (M Sport)

Year	Trim / engine	0–60	¼ mile	HP	Drivetrain
2020	xDrive Gran Coupe (M Sport) 3.0L Turbo I-6	4.40 sec	13.00 sec	335 hp	AWD
2020	Gran Coupe (M Sport) 3.0L Turbo I-6	4.70 sec	13.30 sec	335 hp	RWD

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 6.8 qt of 0W-20 engine oil, BMW Hypoid Axle Oil G4 in the differential, DOT 4 brake fluid. Torque lug nuts to 103 ft-lbs. The firing order is 1-5-3-6-2-4.

Lubricants & capacities

Automatic Transmission Fluid	ATF3
Automatic Transmission Fluid Capacity	9.8 qt
Brake Fluid	DOT 4
Clutch Fluid	DOT 4
Differential Gear Oil	BMW Hypoid Axle Oil G4
Differential Gear Oil Capacity	1.05 qt
Engine Coolant	Infiniti BASF Glysantin G40 Coolant
Engine Oil	0W-20

Engine torques

Cylinder Head Instructions	Only use new bolts.
Oil Pump to Cylinder BLock Bolts/Studs	168.0 inch lbs. ft-lbs

Chassis torques

Differential Fill Plug	Final Drive: Use new fill plug: 44.0 ft-lbs
Differential drain Plug	Use new drain plug. ft-lbs
Lug Nuts	103 ft-lbs

Ignition

Cylinder Firing Order

1-5-3-6-2-4

Battery & A/C

Refrigerant	R1234yf
Oil Group	PAG
Oil Type	46YF

Brakes

Brake Caliper Bolt to Carrier Torque	Front: NS, Rear: 26.0 ft-lbs
Brake Caliper Carrier to Hub Bolt Torque	Use new bolts. 81.0 ft-lbs
ABS Sensor Torque	6.6
Vented Rotor Minimum Thickness for Replacement	Front: 13.70; Rear: 12.99

Multi-step torque procedures OEM · verified

Cylinder Head — tightening sequence 1 stages

Bolts 1-14

22 ft. lbs

Factory maintenance schedule OEM · verified

This vehicle uses condition-based service — it signals maintenance needs through its onboard service indicator rather than fixed mileage intervals. Items on the factory schedule:

Replace	Engine Oil Filter · Spark Plugs · Engine Oil · Keyless Entry Remote Battery · Cabin Air Filter · Engine Air Filter Element
Inspect	Windshield Washer System · Parking Brake System · Underbody · Brake Line · Disc Brake Caliper · Brake Rotor · Air Bag System · Exterior Lighting
Road test	Universal Vehicle Operation
Inspect Fluid Level	Engine Coolant System
Reset	Tire Pressure Monitoring System
Drain, Refill & Bleed	Brake Hydraulic System

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

Open recalls

NHTSA campaigns

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

Owner complaints

0 involved a crash · 0 a fire

No owner complaints on record with NHTSA for this vehicle.

Recalls NHTSA · verified

Showing 2 of 4 campaigns on record for this vehicle.

20V761000Electrical System:12V/24V/48V BatteryReported 09/12/2020

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…

21V096000Back Over Prevention: Sensing System: CameraReported 19/02/2021

BMW of North America, LLC (BMW) is recalling certain 2019-2021 X3 sDrive30i, X3 xDrive30i, X3 M40i, X3M, X4 xDrive30i, X4 M40i, M550i, X4M, X5 sDrive40i, X5 xDrive40i, X5 xDrive50i, X5M, X5 M50i, X7 xDrive40i, X7… Remedy: BMW will notify owners, and dealers will inspect the rearview camera software and update it if necessary, free of charge. The recall began April 16, 2021. Owners may contact BMW…