2014 BMW 328i Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2014 BMW 328i and How to Address Them Effectively

Find Repair Location
Reviewed by
Aisha
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 2014 BMW 328i 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 2014 BMW 328i 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

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 steps to diagnose the oil leak in a 2014 BMW 328i?

To effectively diagnose an oil leak in your 2014 BMW 328i, start with a thorough visual inspection of both the engine bay and the area beneath the vehicle. Look for any visible signs of oil, such as puddles or drips, which can help pinpoint the leak's location. Next, regularly check your oil levels; a significant drop can indicate a leak that needs attention. Pay close attention to oil system components, including the oil filter housing gasket, drain plug, oil pan gasket, and oil filler cap, as these are common culprits for leaks. Additionally, inspect the engine gaskets, particularly the valve cover gasket, for any signs of wear or damage. If the source of the leak remains elusive, consider performing a smoke test, which can reveal leaks that are not immediately visible. If you discover oil near the turbocharger components, further investigation will be necessary to determine the cause. Once you identify the source of the leak, replacing any faulty components, such as gaskets or seals, will help resolve the issue and restore your vehicle's performance. By following this structured diagnostic approach, you can efficiently address oil leaks and maintain your BMW's health.

What are the common causes of oil leaks in a 2014 BMW 328i?

When dealing with oil leaks in a 2014 BMW 328i, it's essential to understand the common culprits that may be at play. One frequent issue is the failure of oil system components, which can lead to significant leaks if not addressed. Additionally, engine gaskets can deteriorate over time, resulting in leaks that may not be immediately visible. The oil filter housing gasket is another common source of leaks, often overlooked during routine maintenance. A compromised drain plug can also contribute to oil loss, as can a damaged oil pan gasket, which may require replacement to prevent further leakage. Lastly, an untightened oil filler cap can lead to oil escaping, so it's worth checking this simple component. By being aware of these potential issues, DIYers can take proactive steps to diagnose and fix oil leaks, ensuring their BMW 328i remains in optimal condition.

How urgent is it to address the oil leak in my 2014 BMW 328i to prevent potential engine damage?

Addressing an oil leak in your 2014 BMW 328i is not just a matter of convenience; it is a critical step in safeguarding your engine's health. Even minor leaks can escalate into major problems, leading to severe engine damage if left unattended. The urgency to repair an oil leak stems from the risk of losing essential lubrication, which can cause overheating and ultimately result in catastrophic engine failure. By prioritizing the repair of an oil leak, you not only prevent costly repairs down the line but also ensure that your BMW continues to perform at its best. Ignoring this issue can compromise your vehicle's safety and reliability, making it imperative to act swiftly to maintain the integrity of your engine.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.