2017 Mercedes-Benz C63 AMG S Is Leaking Oil

Diagnosing Oil Leak Sources in Your 2017 Mercedes-Benz C63 AMG S and Recommended Repair Solutions

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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 2017 Mercedes-Benz C63 AMG S 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 2017 Mercedes-Benz C63 AMG S 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 2017 Mercedes-Benz C63 AMG S?

To effectively diagnose an oil leak in your 2017 Mercedes-Benz C63 AMG S, begin by systematically assessing the situation, starting with the most accessible areas. First, check under the vehicle for any visible oil spots or puddles, as this can provide immediate clues about the leak's location. Next, inspect the engine components, focusing on the oil pan, valve cover gaskets, and oil filter housing, as these are common areas where leaks occur. It's also crucial to monitor your oil level; a significant drop may indicate a serious leak that requires prompt attention. Don’t overlook the oil filter, as a damaged or improperly installed filter can lead to leaks. Additionally, examine the oil drain plug for tightness and the condition of its gasket, since a loose plug can also be a source of oil loss. If these steps do not reveal the leak, or if you suspect a more complex issue, consulting a qualified mechanic is advisable for a thorough diagnosis. By following this structured approach, you can efficiently identify and address the oil leak in your vehicle.

What are the common causes of oil leaks in a 2017 Mercedes-Benz C63 AMG S?

Understanding the common causes of oil leaks in a 2017 Mercedes-Benz C63 AMG S is essential for any DIY enthusiast looking to maintain their vehicle. One prevalent issue is the degradation of the oil pan gasket, which can wear out over time, leading to leaks that may go unnoticed until they cause significant problems. Additionally, valve cover gaskets are another frequent culprit; as they age, they can allow oil to escape from the top of the engine, creating a mess and potentially affecting engine performance. The oil filter housing gasket is also prone to failure, which can result in leaks around the oil filter area, making it crucial to check this component during routine maintenance. Furthermore, the seals around the oil cooler can deteriorate, leading to oil leaks that may not be immediately visible. Lastly, the rear main seal can develop leaks as the vehicle ages, causing oil to seep from the back of the engine. By being aware of these common issues, DIYers can take proactive steps to inspect and address potential leaks, ensuring the longevity and reliability of their C63 AMG S. Regular maintenance and prompt repairs are key to preventing more severe damage and costly repairs down the line.

How urgent is it to address the oil leak in my 2017 Mercedes-Benz C63 AMG S?

Addressing an oil leak in your 2017 Mercedes-Benz C63 AMG S is not just a matter of routine maintenance; it is a pressing concern that requires immediate attention. An oil leak can significantly reduce oil levels, leading to inadequate lubrication of the engine, which may result in severe engine damage over time. Furthermore, neglecting this issue can lead to oil contamination within the engine, adversely affecting its performance and longevity. The safety implications are equally alarming, as leaking oil can drip onto hot engine components, creating a fire hazard. Additionally, postponing repairs can escalate the problem, resulting in more extensive and costly repairs down the line. Therefore, it is crucial to act swiftly to address any oil leaks to maintain the performance, safety, and longevity of your Mercedes-Benz C63 AMG S.

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2017 Mercedes-Benz C63 AMG S Oil Leak Causes & Repairs