2007 BMW 328xi Sport Wagon Service Schedule & Maintenance Guide

The 2007 BMW 328xi Sport Wagon (E91) represents a rare and compelling blend of German engineering, wagon practicality, and all-weather capability. Powered by the N52KP 3.0-liter naturally aspirated inline-6 engine producing 230 horsepower and 200 lb-ft of torque, and featuring BMW's xDrive all-wheel-drive system, this vehicle offered the choice of a six-speed manual or automatic transmission . The original factory maintenance program, which covered 48 months or 50,000 miles, has long since expired for this model year . This guide combines BMW's Condition Based Service (CBS) system logic with independent specialist recommendations to help you maintain your E91 properly.

Key Takeaways

• The 2007 BMW 328xi Sport Wagon is powered by the N52KP 3.0-liter naturally aspirated inline-6 engine and features BMW's xDrive all-wheel-drive system. The original 48-month/50,000-mile maintenance program has expired .
• BMW uses a Condition Based Service (CBS) system that calculates individualized service intervals based on actual driving conditions, rather than a fixed schedule . Service data is stored in the remote control key for reading by your BMW service center.
• The engine requires BMW-approved synthetic oil meeting BMW LL-01 specifications. The N52 engine has an oil capacity of approximately 6.5 liters.
• Brake fluid is a time-dependent service requiring replacement every two years or approximately every 30,000 kilometers (18,600 miles) .
• Major periodic service should generally be done every 2 years or after 30,000 kilometers .
• The 2007 BMW 328xi Sport Wagon features a service interval warning system displayed through the driver information center .

Understanding BMW's Condition Based Service (CBS) System

The 2007 BMW 328xi Sport Wagon is equipped with the Condition Based Service (CBS) system . Unlike conventional systems that rely on a rigid fixed schedule, this intelligent system uses sensors and special algorithms that take the driving conditions of your BMW into account to determine current and future service requirements. By letting you define a service and maintenance regimen that reflects your own individual requirements, the system builds the basis for trouble-free driving.

What CBS Monitors

On the Control Display, you can view the remaining times or distances for selected maintenance tasks:

• Engine oil service
• Brake pads: separately for front and rear
• Brake fluid
• Vehicle check
• Legally mandated inspections depending on local regulations

Service Data in the Remote Control

Your vehicle continuously stores service-requirement information in the remote control while you are driving. Your BMW Service Advisor can read this data from the remote control unit and propose an optimized maintenance approach. Whenever you take your car in for servicing, you should hand your BMW Service Advisor the remote control unit that you last used.

Original Factory Maintenance Coverage

The 2007 BMW 328xi Sport Wagon was originally covered by BMW's free scheduled maintenance program for 48 months or 50,000 miles . The program covers all factory-recommended maintenance as determined by the Condition Based Service system, including engine oil changes, oil filters, brake pads, brake rotors, and wiper blade inserts . This coverage has long since expired, making owner-funded maintenance the current owner's responsibility.

Authoritative Service Information

For comprehensive service information, the BMW 3 Series (E90, E91, E92, E93) Service Manual: 2006-2011 from Bentley Publishers is a definitive source. It covers the N52KP engine used in the 2007 328xi Sport Wagon and provides step-by-step procedures and accurate specifications for all maintenance and repair operations .

Engine Oil Service

Oil Specifications

The 2007 328xi's N52 3.0L engine requires BMW-approved synthetic oil .

Approved Specifications:

• BMW Longlife-01 (LL-01)
• ACEA A3/B4
• API SN/CF

Approved Viscosity Classes:

• SAE 0W-40
• SAE 0W-30
• SAE 5W-40
• SAE 5W-30

Approved Brands: Castrol, Total, Liqui Moly, Red Line, and other oils meeting BMW LL-01 specifications are suitable . The N52 engine has an oil capacity of approximately 6.5 liters.

Oil Change Interval

Specialist Guidance: Motor oil is the single most important element in keeping your engine healthy and helping it to enjoy a long life . Pelican Parts recommends changing synthetic motor oil every 5,000 miles and always replacing the filter when changing the oil . Different engines and climates require specific oil viscosities; refer to your owner's manual for the type and viscosity of oil required for your car.

The CBS system may allow for longer intervals based on driving conditions, but for the N52 engine, a 5,000-mile interval is recommended for optimal engine protection. With proper maintenance—especially oil changes every 5,000–7,000 miles—many N52 engines can reach 200,000–250,000 miles regularly .

Brake Fluid Service

Recommended Interval

BMW recommends brake fluid replacement every two years as a time-dependent service . Major periodic service should generally be done every 2 years or after 30,000 kilometers (approximately 18,600 miles) .

Fluid Specifications

The 2007 328xi Sport Wagon uses brake fluid meeting DOT 4 specifications. Products such as Bosch ESI6 Extended Service Brake Fluid and Pentosin Super DOT 4 are suitable options.

Service Rationale

Brake fluid is a hydraulic fluid specially formulated to withstand the extreme pressures and temperatures of your braking system. Over time, brake fluid absorbs air, moisture, sludge, and other contaminants. A brake system flush removes the existing fluid and moisture from the system and replaces it with new, clean fluid, ensuring proper brake system performance.

N52 Engine Common Maintenance Considerations

The N52 engine in the 2007 328xi is considered a very reliable naturally aspirated engine . However, there are a few key maintenance items that require attention.

Valve Cover Gasket Leaks

Oil leaks from the valve cover gasket are very common once the engine reaches 80,000–120,000 miles . Symptoms include:

• Oil smell from the engine bay
• Oil on the engine block
• Occasional smoke from the exhaust side

The repair is relatively inexpensive but should not be ignored.

Electric Water Pump Failure

The electric water pump is one of the most significant maintenance items on the N52 . Typical failure range is 80,000–120,000 miles. Replacement cost typically ranges between $600–$1,200 depending on labor and parts. Many owners replace the thermostat at the same time.

Oil Filter Housing Gasket

The oil filter housing gasket can get hard and lose its seal, allowing oil to drip directly onto the serpentine belt . If oil continuously leaks on the belt, it can cause that belt to swell, crack, and break, which can be disastrous .

Coolant Flange

The coolant flange (nicknamed “Mickey Mouse flange”) connects a coolant hose to the front of the cylinder head . The stock flange’s neck is made from plastic and, after many years and miles, that plastic neck breaks and will dump all of your coolant onto the road, causing your car to immediately overheat . It will show signs of leakage first, and when it does leak, it drips coolant onto the serpentine belt, again causing potential issues.

Transmission and Drivetrain Service

The 2007 328xi features an extended service interval for transmission fluid. The Bentley BMW 3 Series Service Manual covers automatic transmission fluid change procedures for the 2007 328xi .

xDrive All-Wheel-Drive System

The 2007 328xi features BMW's xDrive all-wheel-drive system . The transfer case and front and rear differentials contain specialized fluids that require periodic changes. Fuchs fully synthetic gear oil is one option for standard differentials .

Summary of Recommended Service Intervals

Frequently Asked Questions

How often should I change the oil on my 2007 BMW 328xi Sport Wagon?

Pelican Parts recommends changing synthetic motor oil and the filter every 5,000 miles . The N52 3.0L engine requires BMW-approved synthetic oil meeting BMW LL-01 specifications and has a capacity of approximately 6.5 liters. With proper maintenance—especially oil changes every 5,000–7,000 miles—many N52 engines can reach 200,000–250,000 miles regularly .

What type of engine oil does the 2007 BMW 328xi Sport Wagon use?

The N52 engine requires BMW-approved synthetic oil meeting BMW Longlife-01 (LL-01) specifications . Approved viscosity classes include SAE 0W-40, SAE 0W-30, SAE 5W-40, and SAE 5W-30. Approved brands include Castrol, Total, Liqui Moly, and Red Line .

When should the brake fluid be replaced?

BMW recommends brake fluid replacement every two years as a time-dependent service . The 2007 328xi Sport Wagon uses DOT 4 brake fluid. A brake system flush removes the existing fluid and moisture from the system and replaces it with new, clean fluid.

How does the BMW Condition Based Service (CBS) system work?

CBS is BMW's onboard system that uses sensors and special algorithms to evaluate your driving conditions and calculate when service is required . Service data is stored in the remote control key and can be read by your BMW service center. The system monitors engine oil, brake pads, brake fluid, and vehicle check requirements.

What are common N52 engine issues to watch for?

Common N52 engine issues include:

• Valve cover gasket leaks: Common at 80,000–120,000 miles
• Electric water pump failure: Typical at 80,000–120,000 miles
• Oil filter housing gasket: Can leak oil onto the serpentine belt
• Coolant flange: Plastic neck can break, causing sudden overheating

What was the original warranty coverage on the 2007 BMW 328xi Sport Wagon?

The 2007 BMW 328xi Sport Wagon came with a 48-month/50,000-mile basic warranty, a 48-month/50,000-mile powertrain warranty, a 144-month/unlimited-mile rust warranty, and free scheduled maintenance for 48 months or 50,000 miles . These programs have long since expired for this model year, making owner-funded maintenance the current owner's responsibility.

Where can I find detailed service information for my 2007 BMW 328xi Sport Wagon?

The BMW 3 Series (E90, E91, E92, E93) Service Manual: 2006-2011 from Bentley Publishers is a comprehensive source of service information covering the 2007 328xi Sport Wagon . The vehicle's Owner's Manual provides details on the CBS system and maintenance requirements. Your BMW service center can read the service data from your remote control key to determine the specific maintenance required for your vehicle. The vehicle features a service interval warning displayed through the driver information center .