2015 BMW I3 Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2015 BMW i3 and How to Address Them Effectively

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Reviewed by
Devin Cabugcal
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 i3 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 i3 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.

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 steps should I take to diagnose the oil leak in my 2015 BMW i3?

To effectively diagnose an oil leak in your 2015 BMW i3, start by identifying the source of the leak, focusing on common areas such as the valve cover gasket, timing cover gasket, and oil filter housing. Regularly checking your oil levels is essential, as it helps you catch leaks early and maintain optimal engine performance. Inspect the vehicle's undercarriage for any signs of oil pooling, which can indicate a leak's location. Additionally, pay attention to any unusual sounds, such as sizzling or popping, which may suggest oil is leaking onto hot engine components. If your initial assessments do not reveal the source, consider consulting a trusted BMW specialist who can provide expert diagnostics and repair solutions. By following this methodical approach, you can efficiently pinpoint and address the oil leak, ensuring your BMW remains in top condition.

What are the common causes of oil leaks in a 2015 BMW i3?

When dealing with oil leaks in a 2015 BMW i3, it's essential to understand the common culprits that may be contributing to the problem. One of the most frequent sources is a worn valve cover gasket, which can lead to noticeable leaks around the engine. Additionally, if you notice oil pooling on the left side of the engine, the oil filter housing gasket may be compromised, requiring attention. Other potential causes include damaged oil pan gaskets, loose or untightened oil filler caps, and worn engine gaskets and seals. To effectively tackle these issues, start by thoroughly inspecting the engine for signs of oil accumulation and tracing the leak back to its source. This proactive approach not only helps in identifying the specific problem but also aids in maintaining the overall performance and reliability of your BMW i3.

How urgent is it to address the oil leak in my 2015 BMW i3?

Addressing an oil leak in your 2015 BMW i3 is not just a matter of convenience; it is a critical maintenance task that demands immediate attention. Ignoring an oil leak can lead to severe engine stress, resulting in decreased performance and potential malfunction. BMW vehicles are particularly susceptible to oil leaks, and if left unaddressed, these leaks can escalate into more significant issues, including extensive engine damage that may be costly to repair. Moreover, oil leaks are not always easy to detect, making it essential to accurately identify the source for effective resolution. Delaying repairs can lead to irreparable harm to your engine, ultimately compromising the safety and reliability of your vehicle. Therefore, if you notice any signs of an oil leak, it is imperative to act swiftly to safeguard your BMW i3's performance and longevity.

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Oil Leak in 2015 BMW i3 Urgent Repair Needed