2015 Mercedes-Benz G63 AMG Is Leaking Oil

Address Oil Leaks in Your 2015 Mercedes-Benz G63 AMG 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 2015 Mercedes-Benz G63 AMG 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 2015 Mercedes-Benz G63 AMG 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 steps to diagnose the oil leak in a 2015 Mercedes-Benz G63 AMG?

To effectively diagnose an oil leak in a 2015 Mercedes-Benz G63 AMG, begin with a thorough visual inspection of the engine and undercarriage, as this can often reveal the source of the leak through visible oil drips or pools. Next, check the oil levels to determine if there has been a significant loss, which may indicate a leak. Pay close attention to the oil filter and drain plug, ensuring they are secure and free from any signs of leakage. Inspecting gaskets and seals around critical engine components, such as the oil pan and valve cover, is essential, as wear or damage in these areas can lead to leaks. If the source remains elusive, consider performing a pressure test on the oil system to identify hidden leaks. Additionally, using UV dye can be a helpful method to trace the leak under UV light, making it easier to pinpoint the problem area. If these steps do not yield results, consulting a qualified mechanic is advisable for a more in-depth diagnosis and repair. By following this structured diagnostic approach, you can systematically address the oil leak issue in your G63 AMG.

What are the common causes of oil leaks in a 2015 Mercedes-Benz G63 AMG?

When diagnosing oil leaks in a 2015 Mercedes-Benz G63 AMG, it's crucial to understand the common culprits that may be at play. One frequent issue is the degradation of the oil pan gasket, which can wear out over time, leading to noticeable leaks. Similarly, valve cover gaskets are prone to deterioration, and their failure can result in oil escaping from the engine. Another area to inspect is the oil filter housing gasket; if this component fails, it can create leaks around the oil filter, making it essential to check during routine maintenance. Additionally, the seals surrounding the oil cooler can degrade, contributing to leaks in that area. Lastly, the rear main seal is another potential source of oil leaks, as it can wear out and allow oil to escape from the back of the engine. Addressing these issues promptly is vital to prevent further engine damage, and regular inspections can help you catch these problems early, ensuring your G63 AMG remains in optimal condition.

How urgent is it to address the oil leak in my 2015 Mercedes-Benz G63 AMG?

Addressing an oil leak in your 2015 Mercedes-Benz G63 AMG is not just a matter of routine maintenance; it is a critical issue that demands immediate attention. Ignoring an oil leak can lead to severe engine damage due to inadequate lubrication, which increases friction and heat among engine components. This can result in costly repairs and a significant decrease in your vehicle's performance. Moreover, oil leaks pose safety risks, as oil can drip onto hot engine parts, creating a fire hazard. The longer you wait to address the leak, the more extensive the damage can become, leading to higher repair costs and potential safety concerns. Therefore, it is essential to have the leak inspected and repaired by a qualified mechanic as soon as possible to ensure the reliability and safety of your G63 AMG. Taking prompt action not only protects your investment but also ensures a smooth and safe driving experience.

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