2016 maintenance schedule

2016 BMW 428i Convertible Service Requirements & Maintenance Schedule

The 2016 BMW 428i Convertible (F33) is equipped with the Condition Based Service (CBS) system.

Reviewed by

Sophia Mercer

European vehicle technical reviewer

Last updated

October 18, 2026

Reviewed for service schedule clarity.

Key Takeaways

  • Condition Based Service (CBS) System: Your 2016 BMW 428i Convertible uses an intelligent CBS system that monitors driving conditions to determine when maintenance is actually needed. Service data is stored on your remote control key for your service center to read .
  • Major Periodic Service: As a general guideline, BMW recommends a major service every 2 years or after 30,000 kilometers (approximately 18,600 miles) .
  • Oil Change Interval: Pelican Parts recommends changing synthetic motor oil every 5,000 miles and always replacing the filter . BMW has historically recommended intervals up to 15,000 miles, but a 7,500-mile interval is considered frequent enough by many experts .
  • Brake Fluid: BMW recommends changing the brake fluid every 2 years . The vehicle requires a high-quality DOT 4 or equivalent brake fluid .
  • Spark Plugs: The N20 engine in the 428i uses spark plugs with a gap of 0.032 inches. Replacement is generally recommended at 80,000 to 100,000 miles .

Understanding the BMW Maintenance System

The 2016 BMW 428i Convertible (F33) is equipped with the Condition Based Service (CBS) system. This intelligent system uses sensors and special algorithms that take into account the driving conditions of your vehicle to recognize maintenance requirements. This makes it possible to adapt the amount of maintenance corresponding to your user profile .

How CBS Works:

  • Sensors and Algorithms: The system analyzes your driving style, trip length, and other factors to determine when service is needed .
  • Remote Control Key: All maintenance information is continuously stored in your vehicle's remote control key. Your BMW service center will read this data to suggest the right service procedures for your vehicle. Always hand your service specialist the remote control with which the vehicle was driven most recently .
  • Storage Periods: Storage periods during which the vehicle battery was disconnected are not taken into account. If this occurs, have a service center update the time-dependent maintenance procedures, such as checking brake fluid and, if needed, changing the engine oil and the microfilter/activated-charcoal filter .

Engine Oil Service

BMW Factory Schedule

BMW's Condition Based Service system determines the precise oil change interval based on your driving conditions. BMW has recommended intervals as long as 15,000 miles, as fully synthetic oil is very durable .

Specifications

The 2016 BMW 428i Convertible is powered by the N20 2.0-liter turbocharged inline-four engine (or the N26 SULEV variant). Different engines and climates require specific oil viscosities; always refer to your owner's manual for the correct type and viscosity for your car .

Important Oil Level Information:

  • Add oil within the next 125 miles/200 km if the warning appears, otherwise engine damage may occur .
  • Do not add too much engine oil.

Owner Guidance

Motor oil is the single most important element in keeping your engine healthy and helping it to enjoy a long life . Many independent specialists and owners recommend a more conservative approach:

  • Conservative Interval: Pelican Parts recommends changing synthetic motor oil every 5,000 miles and always replacing the filter .
  • Moderate Interval: A 7,500-mile interval is considered frequent enough by many experts for this engine .

Brake Fluid Service

BMW Factory Schedule

It is recommended to change the brake fluid every 2 years . The CBS system will also monitor this time-based service and alert you when it is due.

Specification

The 2016 BMW 428i Convertible requires a high-quality brake fluid. Bosch ESI6 Extended Service brake fluid is one option that meets the requirements for this vehicle and is compatible with DOT 3, DOT 4, and DOT 5.1 systems .

Fluid Features:

  • High wet boiling point for performance in modern ABS and ESP systems .
  • Reduces corrosion and provides high lubricity .

Spark Plug Service

BMW Factory Schedule

Spark plugs are essential for igniting the fuel-air mixture in the engine. They should be replaced at the intervals indicated by the manufacturer's maintenance schedule .

Specifications

The 2016 BMW 428i Convertible uses NGK spark plugs as original equipment (OEM) .

  • Part Number: SILZKBR8D8S .
  • Gap: 0.032 inches .
  • Hex Size: 0.55 inches (14mm) .
  • Reach: 26.5mm .

Owner Guidance

For optimal engine performance and longevity, it is recommended to replace spark plugs at mileage intervals of 80,000 to 100,000 miles . Keeping your spark plugs fresh is a very important part of keeping your car in top shape .

General Service Recommendations Summary

The CBS system is the ultimate authority for your specific vehicle. The following table summarizes key service intervals based on OEM documentation and specialist guidance.

Service ItemOEM/General GuidanceOwner Guidance
Major Periodic ServiceEvery 2 years or 30,000 kmFollow manufacturer schedule
Engine Oil & FilterCBS-driven (up to 15,000 miles)Every 5,000–7,500 miles
Brake FluidEvery 2 yearsFollow manufacturer schedule
Spark PlugsOEM/General guidance80,000–100,000 miles

Frequently Asked Questions

1. How often should I change the oil in my 2016 BMW 428i Convertible?

Pelican Parts recommends changing synthetic motor oil every 5,000 miles . BMW has historically recommended intervals up to 15,000 miles . A 7,500-mile interval is considered frequent enough by many experts for this engine .

2. What type of brake fluid does the 2016 BMW 428i Convertible require?

The vehicle requires a high-quality brake fluid that meets or exceeds DOT 4 specifications. Bosch ESI6 is one compatible option .

3. When should the spark plugs be replaced?

For optimal performance and longevity, it is recommended to replace spark plugs at intervals of 80,000 to 100,000 miles. The OEM part is NGK, with reference number SILZKBR8D8S .

4. How does the CBS system work?

The Condition Based Service system uses sensors and special algorithms to monitor your driving conditions and determine maintenance requirements. Service data is stored on your remote control key and read by your service center .

5. What is the major periodic service interval?

As a general guideline, BMW recommends major periodic service every 2 years or after 30,000 kilometers (approximately 18,600 miles) .

6. How does the engine oil level monitoring work?

The system will display a message in the instrument cluster if the oil level is too low. You should add oil within the next 125 miles to avoid engine damage .

*Always consult your vehicle's owner's manual and CBS system for the most accurate maintenance requirements for your specific 2016 BMW 428i Convertible. Maintenance needs may vary by production date and driving conditions.*