2013 BMW 335i XDrive Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2013 BMW 335i xDrive 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 2013 BMW 335i 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 2013 BMW 335i 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

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 steps should I take to diagnose the oil leak in my 2013 BMW 335i xDrive?

When diagnosing an oil leak in your 2013 BMW 335i xDrive, it's essential to adopt a systematic approach that begins with a thorough visual inspection. Start by looking for any visible signs of oil, such as drips or stains, both under the vehicle and in the engine compartment. Pay particular attention to common leak points, including the valve cover gasket, oil filter housing gasket, and oil pan gasket, as these are frequent culprits in BMW models. Additionally, be mindful of any unusual burnt oil smells, especially if they are noticeable through the air conditioning system, as this can indicate a leak. Regularly monitoring your oil levels is also crucial; a significant drop in oil levels over a short time frame can signal a leak that needs immediate attention. If your inspection does not yield clear results, consulting a trusted BMW specialist can provide you with expert insights and a more thorough diagnosis. Addressing any identified leaks promptly is vital to prevent further engine damage and ensure the longevity of your vehicle. By following this diagnostic approach, you can effectively manage and resolve oil leak issues in your BMW.

What are the common causes of oil leaks in a 2013 BMW 335i xDrive?

When dealing with oil leaks in a 2013 BMW 335i xDrive, it's crucial to understand the common problems that can arise. One of the primary culprits is the failure of seals and gaskets, particularly the valve cover gasket, oil filter housing gasket, oil pan gasket, and main engine seal. These components can deteriorate over time, especially in older vehicles or those with high mileage, leading to leaks. Additionally, the oil system itself can experience failures, which may also contribute to oil leakage. Regular maintenance is vital; neglecting oil changes or using the incorrect oil type can result in oil deposits that exacerbate the problem. By identifying these common issues, DIYers can take proactive steps to inspect and repair their vehicle, ensuring optimal performance and preventing further damage.

How urgent is it to address an oil leak in a 2013 BMW 335i xDrive?

When dealing with an oil leak in your 2013 BMW 335i xDrive, understanding the urgency of the situation is crucial for both safety and vehicle longevity. While it may be tempting to continue driving as long as you keep the oil levels topped up, neglecting the leak can lead to more severe problems down the line, such as engine damage or costly repairs. Identifying the source of the leak is the first step in addressing the issue effectively; common culprits include the valve cover gasket, oil filter housing gasket, and oil pan gasket. If left unattended, these leaks can worsen, leading to oil loss that may compromise engine performance and safety. Therefore, while you can manage minor leaks temporarily, it is advisable to prioritize repairs to prevent further complications and ensure your BMW remains in optimal condition. Taking action sooner rather than later not only protects your vehicle but also enhances your DIY skills as you tackle the repair process.

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