2017 BMW 328d Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2017 BMW 328d and How to Address Them Effectively

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Reviewed by
Bo Fader
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 2017 BMW 328d is leaking oil are oil system component failure and leaking engine gaskets.
  • Oil System Components: A worn or damaged oil pump or filter can lead to low oil pressure, resulting in 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 2017 BMW 328d 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.

A bad oil level sensor may cause a false reading of the engine oil level. The oil level warning light may illuminate even when the oil level (checked manually) is within an acceptable range. The warning light may also come on and off intermittently if the sensor is faulty. An error code may be sent to the PCM and a check engine light may come on the dashboard as well if the sensor is bad.

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 initial diagnostic steps to take for an oil leak in a 2017 BMW 328d?

When faced with an oil leak in your 2017 BMW 328d, the initial diagnostic steps are crucial for identifying the problem and determining the best course of action. Start by visually inspecting the engine and surrounding components to locate the source of the leak; look for any signs of oil pooling or seepage. Next, check the oil levels to ensure they are within the recommended range, as a significant drop may indicate a serious leak. Pay close attention to the oil filter and drain plug, as these areas are common sources of leaks due to damage or looseness. Additionally, examine the gaskets and seals for any signs of wear, as these components often fail and lead to oil leaks. If the leak remains elusive, consider performing a pressure test to help pinpoint the issue, especially for leaks that are not easily visible. Should you find the diagnosis challenging or the source unclear, consulting a qualified mechanic or BMW service center can provide professional insight and assistance. By following these steps, you can effectively tackle the oil leak issue and maintain your vehicle's performance.

What are the common causes of oil leaks in a 2017 BMW 328d?

When dealing with oil leaks in a 2017 BMW 328d, it's essential to understand the common culprits that may be at play. One of the primary causes is the degradation of gaskets and seals, such as the valve cover gasket or oil pan gasket, which can wear out over time and lead to leaks. Additionally, the oil filter housing gasket is another frequent offender, as it can deteriorate and allow oil to escape. It's also important to inspect the oil cooler lines, as any faults here can result in significant leaks. A cracked oil pan is another potential source of oil leakage, which can occur due to impact or corrosion. Lastly, don’t overlook the oil drain plug; if it’s loose or damaged, it can easily lead to oil seeping out. By regularly checking these components and addressing any issues promptly, DIY enthusiasts can effectively manage and prevent oil leaks, ensuring their BMW 328d remains in optimal condition.

How urgent is it to address the oil leak in my 2017 BMW 328d?

When dealing with an oil leak in your 2017 BMW 328d, understanding the urgency of the situation is crucial for maintaining your vehicle's performance and safety. A minor leak may seem manageable, but even small issues can escalate quickly, leading to significant engine damage if left unchecked. The lubrication provided by engine oil is vital for preventing excessive wear on critical components, and a loss of this lubrication can result in costly repairs down the line. Moreover, oil leaks pose safety risks, especially if oil drips onto hot engine parts, creating a fire hazard. Additionally, the environmental impact of leaking oil cannot be overlooked, as it can contaminate soil and water sources. Therefore, it is essential to assess the severity of the leak and address it promptly to avoid potential hazards and ensure the longevity of your vehicle. Consulting a qualified mechanic for an inspection can provide clarity on the best course of action, helping you to safeguard both your car and the environment.

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