2013 BMW 740Li Maintenance Schedule & Service Intervals

Key Takeaways

• The 2013 BMW 740Li is powered by the N55 3.0L turbocharged inline-six engine and uses BMW's Condition Based Service (CBS) system, which calculates maintenance needs based on actual driving conditions rather than fixed intervals .
• Major scheduled service milestones include spark plug replacement at 60,000 miles, oxygen sensor replacement at 120,000 miles (repeat at 150,000), and another spark plug service at 120,000 miles .
• Brake fluid should be flushed and replaced at regular intervals—a common recommendation is every 2 years or approximately 30,000 miles .
• The N55 engine requires BMW-approved synthetic oil and has an oil capacity of approximately 6.5 liters.
• At a 4S店 service interval of approximately 10,000 miles, a standard oil change costs around $160, while a major service can cost over $600 .

Understanding BMW's Condition Based Service (CBS) System

The 2013 BMW 740Li utilizes BMW's Condition Based Service (CBS) system. Unlike traditional fixed-interval maintenance schedules, CBS uses sensors and special algorithms that take into account the driving conditions of your vehicle to determine when maintenance is required . The system adapts the amount of maintenance to your specific driving profile, considering factors such as trip length, engine temperature, and driving style .

Service information on required maintenance is continuously stored in the vehicle's remote key fob. Your service center will read out this data and suggest the appropriate service procedures for your vehicle .

Checking CBS Status:

• Press the MENU button on your iDrive controller
• Select Vehicle Information
• Navigate to Vehicle Status
• Choose Service Required to see an overview of CBS service items

OEM Factory Maintenance Schedule

The following maintenance intervals represent the key factory-recommended milestones for the 2013 BMW 740Li. Exact intervals are determined by the vehicle's CBS system based on driving conditions .

Additional Scheduled Services

Based on OEM documentation, the following service intervals also apply to the 2013 BMW 740Li :

Engine Oil and Filter Change

Motor oil is the single most important element in keeping your engine healthy . The 2013 740Li uses the N55 3.0L turbocharged inline-six engine .

Oil Specifications:

• BMW-approved synthetic oil meeting BMW Longlife standards
• Engine code: N55 B30A
• Capacity: Approximately 6.5 liters

Oil Change Interval Guidance:

BMW recommends changing your 2013 740Li's oil at regular intervals . Your 740Li may need an oil change sooner if:

• The check engine/oil change light is on
• You hear knocking sounds from the engine
• You sense an oil smell in the cabin
• You see an excess amount of vehicle exhaust

More frequent oil changes may be needed if you regularly haul heavy loads, drive in dusty conditions, or drive at low speeds for long distances .

Based on 4S店 maintenance recommendations in some markets, a service interval of approximately 10,000 miles or 1 year is advised for oil and filter changes, with a standard oil change costing approximately $160 (based on 5W-30 oil pricing) .

Spark Plug Service

The N55 engine uses 6 spark plugs . Spark plugs provide the electric spark needed for combustion—without that spark, your engine won't start.

Service Interval: Spark plugs are recommended for replacement at 60,000 miles, with a repeat service at 120,000 miles .

Symptoms of Spark Plug Issues:

• Difficulty starting your car
• Check engine light for a misfire code
• Reduced fuel economy
• Rough idle
• Engine vibration

Spark plugs should always be replaced in sets .

Oxygen Sensor Service

Service Interval: Oxygen sensors are scheduled for replacement at 120,000 miles, with a repeat service at 150,000 miles . Oxygen sensors deteriorate on a mileage basis, and replacement helps maximize fuel economy and minimize exhaust pollution.

Brake Fluid Service

Brake fluid is essential for the operation of your car's brakes. Over time, brake fluid absorbs moisture and contaminants, which lowers its boiling point and compromises braking performance .

Service Interval: It is a good practice to change brake fluid every 24,000 miles or 36 months . The OEM documentation specifies brake fluid flush/replacement at 30,000-mile intervals .

Signs Brake Fluid Needs Attention:

• Brake fluid appears dark brown or black
• Brake pedal feels spongy

Brake System Service

BMW recommends that front and rear brakes are serviced at least once every 12,000 miles or 12 months, including inspection of the parking brake .

Brake Pad Life: Brake pads typically last between 30,000 and 40,000 miles depending on driving style and conditions .

Signs of Brake Issues:

• Unusual noises (squealing or grinding)
• Vibration or pulsation in the steering wheel or pedal
• A burning smell near the tires
• Illuminated brake dashboard warning light

Transmission Service

BMW recommends that the transmission be inspected routinely and that transmission and differential fluids be exchanged at regular intervals with BMW-approved transmission fluid .

General Guidance: Some technicians suggest that between 30,000 and 60,000 miles is a good timeframe for having your BMW's transmission fluid checked and replaced, but that timeline can vary depending on how your vehicle is used . The OEM documentation indicates automatic transmission fluid change at 100,000 miles .

Drivetrain and Differential Service

For xDrive models, the drivetrain (transmission, driveshaft, differential, and axles) requires periodic inspection . At a minimum, get your differential inspected and the differential fluid changed as part of your regular maintenance routine, since your vehicle cannot function without a differential .

Signs of Drivetrain Issues:

• Clunks when shifting
• Vibration as your vehicle accelerates
• Resistance when turning
• Heavy vibrations in your floorboards
• Fluid leaking

Service Interval Summary

Long-Term Ownership Outlook

With proper and diligent maintenance, a 2013 BMW 740Li has a good chance of achieving high mileage—potentially 200,000 miles or more. Staying on track with routine service appointments can help your 740Li perform better, increase your vehicle safety, and help you avoid expensive repairs.

Regular maintenance is an investment that maintains the value and dependability of your car, extends its service life, and increases its resale value.