2020 Mercedes-Benz G63 AMG Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2020 Mercedes-Benz G63 AMG and How to Address Them

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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 2020 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 2020 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.

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 potential causes of an oil leak in a 2020 Mercedes-Benz G63 AMG, and how should I diagnose them?

When diagnosing an oil leak in your 2020 Mercedes-Benz G63 AMG, it's essential to adopt a systematic approach that begins with the most accessible checks before progressing to more complex diagnostics. Start with a thorough visual inspection of the engine bay and under the vehicle to identify any visible signs of oil accumulation. Pay close attention to common culprits such as worn gaskets or seals, particularly around the oil pan, valve cover, and oil filter housing, as these components are prone to deterioration over time. Next, ensure that the oil drain plug is secure and free from damage, as a loose or compromised plug can lead to significant leaks. If no issues are found, examine the oil filter for proper installation and any signs of wear, as a faulty filter can also be a source of leaks. Additionally, inspect the oil cooler lines for any signs of degradation, which can contribute to oil loss. If the leak remains elusive, consider monitoring your oil levels regularly to detect any significant drops, and utilize UV dye in the oil to help trace the leak under UV light. Finally, if necessary, conduct a pressure test to accurately pinpoint the leak's location. By following this structured diagnostic approach, you can effectively identify and address the source of the oil leak in your vehicle.

What are the common causes of oil leaks in a 2020 Mercedes-Benz G63 AMG?

When dealing with oil leaks in a 2020 Mercedes-Benz G63 AMG, it's essential to understand the common culprits that may be at play. One frequent source is the oil pan gasket, which can degrade over time, leading to oil seepage. Similarly, worn or damaged valve cover gaskets can allow oil to escape from the engine, creating potential leaks. Another area to inspect is the oil filter housing gasket; if this component is faulty, it can result in oil leaking from the filter housing. Additionally, the oil cooler lines are prone to wear and can develop leaks, so regular inspections are crucial to catch any issues early. Lastly, a cracked or damaged oil pan, often caused by road debris, can also lead to significant oil leaks. By being proactive and addressing these common causes, G63 AMG owners can maintain their vehicle's performance and prevent more severe problems in the future. Regular maintenance and thorough inspections are key to identifying these issues before they escalate.

How urgent is it to address the oil leak in my 2020 Mercedes-Benz G63 AMG?

Addressing an oil leak in your 2020 Mercedes-Benz G63 AMG is not just a matter of routine maintenance; it is a pressing concern that requires immediate attention. Oil is vital for lubricating engine components, and a leak can lead to a significant loss of oil, which may result in severe engine damage and costly repairs down the line. Moreover, the safety implications cannot be overlooked; leaking oil can drip onto hot engine parts, creating a fire hazard that endangers both the vehicle and its occupants. By delaying repairs, you risk escalating the problem, leading to more extensive damage and higher repair costs. Therefore, it is crucial to act swiftly and address any signs of an oil leak to ensure the safety, performance, and longevity of your G63 AMG. Taking prompt action not only protects your investment but also provides peace of mind while driving.

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