2015 BMW 550i XDrive Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2015 BMW 550i xDrive and How to Address Them Effectively

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
80% chance it's the
Oil System Components
0%
20% chance it's the
Engine Gaskets
The most common reasons a 2015 BMW 550i xDrive is leaking oil are oil system component failure and leaking engine gaskets.
  • Oil System Components: A failure in oil system components, such as a worn oil pump or clogged oil filter, can lead to inadequate lubrication and potential engine damage.
  • Engine Gaskets: A worn or damaged engine gasket can lead to oil or coolant leaks, resulting in engine overheating or loss of lubrication.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2015 BMW 550i xDrive is leaking oil?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Oil pans don't wear out or break like other parts, they generally only need to be replaced because of external damage from an accident or an improperly tightened drain plug. The main symptom you will experience is an oil leak underneath the engine of your car. The oil that leaks from a damaged oil pan will range from dark brown to dark black. If the leak is large enough or occurs for long enough the oil level will be low enough to turn the oil pressure or low oil level warning light on.

An oil leak may be noted on the ground where the vehicle is parked. However, many vehicles have plastic trays underneath the engine that may catch leaking oil and conceal the leak. In such cases, a low oil level, a burning oil smell, or even smoke from oil burning in the engine bay may be noted.

»MORE: Signs of a bad oil pan gasket

The engine oil pressure warning light will come on if the engine oil pressure is low, or if the oil pressure sensor is faulty. In either case, engine power may be reduced significantly. The check engine light may also illuminate, and an on-board diagnostic (OBD) trouble code will be stored in the vehicle's computer.

What are the steps to diagnose the oil leak in a 2015 BMW 550i xDrive?

To effectively diagnose an oil leak in your 2015 BMW 550i xDrive, start with a thorough visual inspection of the vehicle. Look beneath the car for any visible oil spots on the ground and examine the oil pan and surrounding engine components for signs of leakage. Next, regularly check your oil levels; a significant drop can indicate a leak that needs attention. Focus on inspecting key oil system components, including the oil filter housing, valve cover gasket, oil pan gasket, and main engine seal, as these are common culprits for leaks in BMWs. If you cannot identify the source of the leak, consider using an oil leak detection dye, which can help highlight the leak's location under UV light. Should the problem persist or if you suspect a more complex issue, it’s wise to consult a professional mechanic for a comprehensive diagnosis. By following this structured approach, you can efficiently pinpoint and address oil leaks, ensuring your BMW remains in optimal condition.

What are the common causes of oil leaks in a 2015 BMW 550i xDrive?

When diagnosing oil leaks in a 2015 BMW 550i xDrive, it's essential to understand the common problems that can arise within the vehicle's oil system. One of the primary culprits is the oil filter housing gasket, which can deteriorate over time, leading to noticeable oil seepage. Additionally, as the vehicle ages, engine gaskets and seals may wear out, allowing oil to escape at the seams. Worn valve cover gaskets are particularly notorious in BMW models, often resulting in significant leaks. Other potential sources of oil leaks include worn valve seals, which can lead to oil entering the combustion chamber, and more severe issues such as blown piston rings or worn cylinder walls. Regular maintenance and timely inspections of these components are crucial for preventing oil leaks and ensuring the longevity of your BMW 550i xDrive. By being proactive and addressing these common issues, you can maintain your vehicle's performance and avoid costly repairs down the line.

How urgent is it to address the oil leak in my 2015 BMW 550i xDrive?

Addressing an oil leak in your 2015 BMW 550i xDrive is not just a matter of routine maintenance; it is a critical issue that demands immediate attention. Oil is essential for lubricating engine components, and a leak can lead to a significant loss of oil, which may result in inadequate lubrication and ultimately cause severe engine damage or even complete engine failure. Moreover, an oil leak can create hazardous driving conditions, as spilled oil on the road can make surfaces slippery, posing a risk to both you and other drivers. Ignoring this problem can lead to escalating repair costs and compromise the overall performance and longevity of your vehicle. Therefore, it is crucial to act swiftly and address any signs of an oil leak to ensure your BMW remains in optimal condition and to safeguard your safety on the road.

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2015 BMW 550i xDrive Oil Leak Solutions | RepairPal