2018 BMW M5 Maintenance Schedule & Service Intervals

Key Takeaways

• The 2018 BMW M5 requires a critical break-in service at 1,200 miles that includes engine oil and filter replacement, differential fluid replacement, and intercooler inspection .
• BMW's Condition Based Service (CBS) system monitors driving conditions to determine service intervals, typically cycling every 10,000 miles or 12 months .
• The factory BMW Ultimate Care program covers scheduled maintenance for 3 years or 36,000 miles at no additional cost, with a standard 4-year/50,000-mile new vehicle warranty .
• Spark plugs are due for replacement at 30,000 miles on the S63 V8 engine .
• Oxygen sensors are recommended for replacement at 120,000 miles .
• Motor oil is the single most important element in keeping the S63 engine healthy; independent specialists recommend changes every 5,000–7,500 miles for optimal protection .

Understanding BMW's Condition Based Service (CBS) System

The 2018 BMW M5 does not follow a traditional fixed-mileage maintenance schedule. Instead, it employs BMW's Condition Based Service (CBS) system . Sensors and special algorithms monitor the conditions in which the vehicle is used—including engine temperature, driving style, trip length, and component wear—to determine precisely when service is required .

The CBS system enables the scope of maintenance work to be adapted to the individual usage profile . BMW's maintenance guidelines are sensor-driven and center around a CBS system that is cycled to occur approximately every 10,000 miles . BMW utilizes electronic oil measurement to monitor the engine load on the current oil fill based on driving style and distances, displayed on the vehicle's Control Display .

Service notifications appear on the vehicle's display, alerting you when specific maintenance is due. This adaptive approach means your M5 may require service at different intervals than another vehicle of the same model, depending entirely on how it is driven.

Never ignore CBS alerts. Prompt attention to service notifications prevents minor issues from developing into costly repairs and ensures the vehicle continues delivering the performance expected from BMW's M division.

BMW Ultimate Care & Warranty Coverage

The 2018 BMW M5 includes comprehensive factory coverage :

BMW Ultimate Care offers free scheduled maintenance during the first 3 years or 36,000 miles of ownership . The program covers factory-recommended scheduled maintenance as determined by the CBS system, including engine oil and filter changes, brake fluid flushes, cabin microfilter replacement, spark plug replacement, and vehicle checks .

BMW offers Ultimate Care+ for owners who intend to keep their car beyond the standard coverage period, with coverage available up to 7 years or 125,000 miles .

Scheduled Service Intervals

The following intervals represent factory-specified and recommended maintenance for the 2018 BMW M5. The CBS system will adjust these intervals based on your actual driving profile:

Break-In Service (1,200 Miles)

Service Requirements

The 2018 BMW M5 requires a dedicated break-in service at approximately 1,200 miles . This service is critical for the long-term health of the S63 V8 engine and drivetrain components. During this initial visit :

• Engine oil and oil filter are replaced
• Differential fluid is replaced
• The intercooler system is inspected

This break-in service is covered under BMW Ultimate Care during the 3-year/36,000-mile period. Owners should not delay this service. As noted by BMW specialists, all M cars should have had a run-in service at 1,200 miles; for a car to remain under BMW warranty, this service should be completed between 800 and 2,000 miles .

Break-In Driving Guidelines

During the break-in period, BMW specifies several important driving guidelines:

• Keep engine speeds under 5,500 rpm
• Avoid full-throttle acceleration and kickdown
• Do not use Launch Control

Engine Oil Service

Factory Guidance

The 2018 BMW M5 is powered by the S63 4.4L twin-turbo V8 engine. BMW recommends changing the engine oil and filter at intervals determined by the CBS system, typically every 10,000 miles or 12 months .

An oil change for the 2018 M5 requires approximately 8.5 quarts of oil . The oil filter should always be replaced simultaneously with an oil change.

Recommended Oil Specification: BMW Longlife-approved fully synthetic oil. The S63 engine requires high-performance synthetic oil with specific BMW approvals. Consult your owner's manual for the exact viscosity specification.

Conservative Owner Guidance

Motor oil is the single most important element in keeping your engine healthy and helping it to enjoy a long life . While the CBS system may allow intervals up to 10,000+ miles, independent specialists recommend more frequent oil changes:

• Pelican Parts recommends changing synthetic motor oil every 5,000 miles .
• Asbury Automotive recommends oil changes every 7,500 to 10,000 miles or 6 to 12 months .
• For tuned or track-used vehicles, oil changes should be performed more frequently.

Signs that an oil change may be needed sooner include :

• Check engine light is on
• Engine knocking sounds
• Oil smell inside the car
• Excess amount of vehicle exhaust
• Frequent dusty road driving, heavy loads, or low-speed driving for long distances

More frequent oil changes give technicians more opportunities to catch and alert you to any issues, like worn brake pads or a weak battery .

Spark Plugs

Factory Guidance

The 2018 BMW M5's S63 V8 engine requires spark plug replacement at 30,000 miles . The engine uses eight spark plugs.

BMW technicians will also change the spark plugs again at the 60,000-mile mark and 120,000-mile mark .

Importance

Replacing spark plugs at the recommended interval restores factory combustion efficiency, maintains optimal fuel economy, and prevents engine misfires. Spark plugs are a critical maintenance item, especially if the engine has been tuned for increased performance.

Signs that spark plugs need replacement include:

• Stalling or shaky idling when stopped
• Diminished fuel economy
• Engine knocking
• Illuminated check engine light

Brake Fluid

Factory Guidance

Brake fluid replacement is recommended at the 30,000-mile mark, then every 60,000 miles thereafter . Brake fluid is hygroscopic—it absorbs moisture from the atmosphere over time. This moisture accumulation lowers the fluid's boiling point, which can lead to brake fade during spirited driving.

Brake Inspection

BMW recommends that brakes be disassembled and serviced at least once every 12,000 miles or 12 months.

Signs of brake problems include:

• Unusual noises from the brakes
• Vibration or pulsation in the steering wheel or pedal
• Burning smell near the tires
• Dashboard brake light illuminated
• A sensation that braking performance has changed

Brake Pad Lifespan: The majority of brake pads last between 30,000 and 40,000 miles, depending on driving style and terrain.

Engine Air Filter

BMW technicians will change the engine air filter every 60,000 miles . Replacement may be required more frequently in dusty driving environments. A clean engine air filter ensures optimal airflow for combustion, enhancing engine efficiency and preventing contaminants from entering the engine.

Fuel Filter

Fuel filters are typically changed every 20,000 to 40,000 miles . This interval ensures fuel flow remains clean and unobstructed, protecting fuel injectors and maintaining proper combustion.

Oxygen Sensors

Factory Guidance

The factory schedule for the 2018 BMW M5 indicates oxygen (O2) sensor replacement at 120,000 miles . A failing oxygen sensor can harm performance and fuel mileage and affect drivability.

Cabin Air Filter (Microfilter)

The cabin air filter (microfilter) is scheduled for replacement at intervals determined by the CBS system based on actual operating conditions. This filter removes pollen, dirt, and harmful airborne pollutants from the cabin air and maintains HVAC system performance.

Cooling System

Coolants are changed at the 10,000-mile mark according to some maintenance guidelines . Regular monitoring of coolant levels is recommended, and any signs of coolant leaks should be addressed promptly.

Transmission and Differential Service

Factory Guidance

The 1,200-mile break-in service includes differential fluid replacement . For ongoing maintenance, BMW's factory schedule does not specify fixed intervals for transmission fluid replacement under routine maintenance.

Conservative Owner Guidance

For tuned or aggressively driven M5 F90s, specialists recommend:

• Transmission fluid change every 60,000 miles to ensure smooth gear shifts and prolong transmission life
• Differential fluid change at 60,000 miles to ensure proper function of the drivetrain

Service Cost Estimates

Estimated maintenance costs for the 2018 BMW M5 include :

Frequently Asked Questions

Does the 2018 BMW M5 have a fixed maintenance schedule?

No. The 2018 M5 uses BMW's Condition Based Service (CBS) system, which monitors actual driving conditions and component wear to determine service intervals rather than following a rigid mileage-based schedule. Service notifications appear on the vehicle's display when maintenance is required .

Does the 2018 BMW M5 need a break-in service at 1,200 miles?

Yes. The 2018 BMW M5 requires a break-in service at 1,200 miles that includes engine oil and filter replacement, differential fluid replacement, and intercooler inspection . This service must be completed between 800 and 2,000 miles to maintain warranty coverage .

When should spark plugs be replaced on the 2018 BMW M5?

BMW recommends spark plug replacement at 30,000 miles for the S63 V8 engine . The engine uses eight spark plugs. Spark plugs are also replaced at 60,000 miles and 120,000 miles .

How often does brake fluid need replacing in the 2018 BMW M5?

BMW recommends brake fluid replacement at the 30,000-mile mark, then every 60,000 miles thereafter . This time-based schedule accounts for moisture absorption that can compromise braking performance.

What is the oil change interval for the 2018 BMW M5?

The CBS system typically prompts engine oil and filter changes every 10,000 miles or 12 months . Independent specialists recommend oil changes every 5,000–7,500 miles for optimal engine protection . The oil change requires approximately 8.5 quarts of oil .

How much oil does the 2018 BMW M5 take?

The 2018 BMW M5 requires approximately 8.5 quarts of oil for a complete oil change .

When should oxygen sensors be replaced on the 2018 BMW M5?

The factory schedule recommends oxygen sensor replacement at 120,000 miles .

When should the engine air filter be replaced?

BMW technicians will change the engine air filter every 60,000 miles . Replacement may be required more frequently in dusty driving environments.

What does BMW Ultimate Care cover for the 2018 M5?

BMW Ultimate Care offers free scheduled maintenance during the first 3 years or 36,000 miles of ownership, covering engine oil and filter changes, brake fluid, spark plug replacements, cabin and engine air filters, and vehicle checks . The vehicle carries a standard 4-year/50,000-mile warranty .

When should the fuel filter be replaced?

Fuel filters are typically changed every 20,000 to 40,000 miles .

What is the break-in procedure for the 2018 BMW M5?

During the break-in period, keep engine speeds under 5,500 rpm, avoid full-throttle acceleration, and do not use Launch Control . The 1,200-mile break-in service must be completed for warranty compliance .