2016 Mercedes-Benz CLA250 Is Leaking Oil

Address Oil Leaks in Your 2016 Mercedes-Benz CLA250 Effectively

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Reviewed by
Andrew Hajjar
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 2016 Mercedes-Benz CLA250 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 2016 Mercedes-Benz CLA250 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 initial steps to diagnose the oil leak in a 2016 Mercedes-Benz CLA250?

When diagnosing an oil leak in your 2016 Mercedes-Benz CLA250, start with a thorough visual inspection of the engine bay and the area beneath the vehicle. Look for any visible signs of oil, such as puddles or drips, and check for oil stains on engine components. Next, verify the oil level using the dipstick; a significant drop may indicate a leak. Pay special attention to the oil filter and drain plug, ensuring they are secure and free from leaks. If necessary, tighten or replace these components. To further pinpoint the issue, consider performing a pressure test on the oil system, which can help identify the exact location of the leak. Additionally, inspect gaskets and seals for any signs of wear or damage, as these are common culprits for oil leaks. Finally, using a diagnostic scanner to check for error codes related to the oil system can provide valuable insights into the problem. By following these steps, you can effectively diagnose the source of an oil leak and take appropriate action to resolve it.

What are the common causes of oil leaks in a 2016 Mercedes-Benz CLA250?

When dealing with oil leaks in a 2016 Mercedes-Benz CLA250, 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 leaks that can compromise engine performance. Another common source of leaks is the valve cover gasket, which may deteriorate and allow oil to escape, often resulting in visible oil pooling on the engine. Additionally, the oil filter housing gasket can fail, causing oil to leak within the engine compartment, while the oil cooler seal may also degrade, contributing to oil loss. Lastly, problems with the timing cover can lead to leaks as well. Addressing these issues promptly is vital to prevent further engine damage, and regular maintenance checks can help catch these problems early, ensuring your vehicle runs smoothly and efficiently.

How urgent is it to address the oil leak in my 2016 Mercedes-Benz CLA250?

Addressing an oil leak in your 2016 Mercedes-Benz CLA250 is not just a matter of routine maintenance; it is an urgent issue that requires immediate attention. Ignoring an oil leak can lead to a significant decrease in oil levels, which poses a serious risk of engine damage. As oil levels drop, the engine may not receive the lubrication it needs, increasing the likelihood of wear and tear, and ultimately, engine failure. This can result in costly repairs or even necessitate a complete engine replacement, which is a financial burden that most car owners would prefer to avoid. Furthermore, maintaining the correct oil level is essential for the vehicle's overall performance and efficiency, ensuring that it runs smoothly and reliably. Beyond mechanical concerns, an oil leak can create hazardous conditions on the road, such as slippery surfaces that increase the risk of accidents, or even potential fire hazards if the oil comes into contact with hot engine parts. Additionally, neglecting an oil leak can have detrimental effects on the environment, as spilled oil can contaminate soil and water sources. Therefore, it is crucial to address any signs of an oil leak in your CLA250 promptly to safeguard your vehicle's performance, your safety, and the environment.

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2016 Mercedes-Benz CLA250 Oil Leak Causes & Repairs