2017 maintenance schedule
2017 BMW 440i Convertible Maintenance Schedule & Service Intervals
The 2017 BMW 440i Convertible is equipped with BMW's Condition Based Service (CBS) system.
Last updated
October 27, 2026
Reviewed for service schedule clarity.
Key Takeaways
- CBS System: The 2017 BMW 440i Convertible uses BMW's Condition Based Service (CBS) system, which monitors driving style and conditions to determine when service is actually needed rather than following a rigid schedule.
- Factory Intervals: OEM documentation specifies key service intervals including brake fluid at 30,000 miles, engine air filter at 36,000 miles, spark plugs at 100,000 miles, and automatic transmission fluid at 100,000 miles.
- Engine & Oil: The B58 3.0-liter engine requires BMW Longlife-approved synthetic oil, with a capacity of approximately 6.5 liters with filter. BimmerWorld recommends BMW 0W-20 (LL-17 FE+) for the B58 engine.
- Oil Change Guidance: While BMW's CBS system suggests intervals around 10,000 miles, many independent specialists recommend an oil change every 5,000 miles for optimal engine health.
- Maintenance Coverage: The vehicle originally included BMW Ultimate Care, covering scheduled maintenance for the first 3 years or 36,000 miles. This period has expired for all 2017 models.
Understanding BMW's Condition Based Service (CBS) System
The 2017 BMW 440i Convertible is equipped with BMW's Condition Based Service (CBS) system. This sensor-driven system monitors your driving style, trip length, and engine load to determine when service is actually needed, rather than relying on a rigid fixed schedule.
How CBS Works:
- BMW utilizes electronic oil measurement to monitor the engine load on the current oil fill based on driving style and distances.
- The system adapts service recommendations to your specific driving profile.
- Service notifications appear on the Control Display when maintenance is due.
- A service interval warning is standard equipment on this vehicle.
BMW recommends that maintenance and repair work be performed by an authorized BMW service center or a workshop with trained personnel who follow BMW specifications.
Factory Maintenance Schedule (OEM)
Based on OEM documentation for the 2017 BMW 440i, the following service intervals are specified:
| Distance (miles) | Action | Item |
|---|---|---|
| 30,000 | Flush/replace | Brake fluid |
| 36,000 | Replace | Engine air filter |
| 60,000 | Flush/replace | Brake fluid |
| 72,000 | Replace | Engine air filter |
| 90,000 | Flush/replace | Brake fluid |
| 100,000 | Replace | Spark plugs (6 required) |
| 100,000 | Change | Automatic transmission fluid |
| 108,000 | Replace | Engine air filter |
| 120,000 | Flush/replace | Brake fluid |
| 120,000 | Replace | Oxygen sensor |
| 144,000 | Replace | Engine air filter |
| 150,000 | Flush/replace | Brake fluid |
| 200,000 | Replace | Spark plugs |
| 240,000 | Replace | Oxygen sensor |
| 300,000 | Replace | Spark plugs |
Engine Oil & Filter Service
BMW Factory Schedule
BMW's CBS system determines the precise oil change interval based on driving style and conditions. The system typically cycles every 10,000 miles, but this varies based on actual driving conditions.
Oil Specifications
The 2017 BMW 440i Convertible is powered by the B58 3.0-liter inline-six engine.
| Specification | Detail |
|---|---|
| Recommended Oil | BMW 0W-20 (LL-17 FE+) – recommended for B58 engines |
| Alternative Viscosity | 5W-30, 5W-40, or 0W-40 (must meet BMW LL approvals) |
| Oil Approvals | BMW LL-17FE+, BMW LL-01, BMW LL-22 FE++ |
| Oil Capacity | Approximately 6.5 liters with filter |
Oil Quality Standards:
- BMW LL-17 FE+ is designed for B58 gasoline engines.
- 0W-20 reduces drag and friction, improving fuel economy and emissions.
- The low-ash formulation is compatible with modern catalytic converters.
Owner Guidance
Motor oil is the single most important element in keeping your engine healthy. Many independent specialists recommend a more conservative oil change interval for long-term engine health:
- Standard approach: Follow the CBS system (approximately 10,000 miles or 1 year)
- Conservative approach: 5,000 miles, especially for aggressive or city driving, frequent short trips, or hot climates
Brake Fluid Service
BMW Factory Schedule
OEM documentation specifies brake fluid flush and replacement at 30,000, 60,000, 90,000, 120,000, and 150,000-mile intervals.
Why Brake Fluid Service Matters
Brake fluid is a hydraulic fluid specially formulated to withstand the extreme pressures and temperatures of your braking system. Over time, brake fluid absorbs moisture from the air, which can:
- Reduce boiling point, leading to brake fade under heavy braking
- Cause internal corrosion of brake system components
- Result in a spongy or soft brake pedal feel
Signs Brake Fluid Needs Service:
- Brake fluid appears dark, brown, or black
- Brake pedal feels spongy or soft
- Diminished braking performance
Spark Plug Service
BMW Factory Schedule
OEM documentation specifies spark plug replacement at 100,000 miles, with a second replacement at 200,000 miles and a third at 300,000 miles. The vehicle requires 6 spark plugs for the 6-cylinder B58 engine.
Why Spark Plug Service Matters
Weak ignition coils or worn spark plugs cause misfires, rough idle, hard starts, and poor mileage. New coils and plugs restore crisp throttle response and cleaner emissions.
Even if only one spark plug is found to be faulty, they should always be replaced in sets. The B58 engine requires six spark plugs.
Engine Air Filter Service
BMW Factory Schedule
OEM documentation specifies engine air filter replacement at 36,000, 72,000, 108,000, 144,000, 180,000, 216,000, 252,000, and 288,000-mile intervals. The engine air filter filters incoming air fed to the engine.
Oxygen Sensor Service
BMW specifies oxygen sensor replacement at 120,000 miles, with a second replacement at 240,000 miles.
Automatic Transmission Fluid Service
BMW Factory Schedule
OEM documentation specifies changing the automatic transmission fluid at 100,000 miles. The automatic transmission fluid is used for lubricating and cooling the automatic transmission.
Maintenance Cost Overview
Based on data for the 2017 BMW 440i Convertible, estimated maintenance costs by year are approximately:
| Year | Estimated Cost |
|---|---|
| Year 1 | $0 |
| Year 2 | $78 |
| Year 3 | $258 |
| Year 4 | $146 |
| Year 5 | $2,861 |
*Costs are estimates and vary significantly by region and service provider. The 3-year/36,000-mile maintenance program covers scheduled maintenance during that period.*
Frequently Asked Questions
1. How often should I change the oil in my 2017 BMW 440i Convertible?
BMW's CBS system determines the interval based on your driving style, typically cycling every 10,000 miles or 12 months. Many independent specialists recommend a more conservative 5,000-mile interval for optimal engine health. The B58 engine has an oil capacity of approximately 6.5 liters with filter.
2. What oil does the 2017 BMW 440i Convertible require?
The B58 engine requires BMW Longlife-approved synthetic oil. BMW 0W-20 (LL-17 FE+) is the recommended oil with low ash content for compatibility with catalytic converters. BMW LL-01 (5W-30/5W-40) is also suitable. Refer to your owner's manual for the correct viscosity for your climate.
3. When should the brake fluid be replaced?
OEM documentation specifies brake fluid flush and replacement at 30,000, 60,000, 90,000, and 120,000-mile intervals. If the brake fluid appears black or brown, it is past due for service.
4. When should the spark plugs be replaced?
OEM documentation specifies spark plug replacement at 100,000 miles, with a second replacement at 200,000 miles and a third at 300,000 miles. The B58 engine requires 6 spark plugs.
5. When should the transmission fluid be changed?
OEM documentation specifies automatic transmission fluid change at 100,000 miles.
6. When should the engine air filter be replaced?
OEM documentation specifies engine air filter replacement at 36,000 miles, then again at 72,000, 108,000, 144,000, 180,000, 216,000, 252,000, and 288,000-mile intervals.
7. When should the oxygen sensor be replaced?
OEM documentation specifies oxygen sensor replacement at 120,000 miles, with a second replacement at 240,000 miles.
8. What warranty coverage did the 2017 BMW 440i Convertible include?
The vehicle originally included a 4-year/50,000-mile basic and powertrain warranty, 144-month/unlimited-mile corrosion perforation warranty, 48-month/unlimited-mile roadside assistance, and a 3-year/36,000-mile maintenance program. This period has expired for all 2017 models.
9. Is the 2017 BMW 440i Convertible expensive to maintain?
Maintenance costs are typical for premium German sports cars. Year 5 is estimated at $2,861, while years 1-2 were covered under the original maintenance program. Regular preventative maintenance is essential for avoiding more costly repairs.
*Always consult your vehicle's owner's manual and the CBS system for the most accurate maintenance requirements for your specific 2017 BMW 440i Convertible. Maintenance needs may vary by production date and driving conditions.*