2015 Mercedes-Benz CLA250 Is Leaking Oil

Address Oil Leaks in Your 2015 Mercedes-Benz CLA250 Effectively

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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 2015 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 2015 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 2015 Mercedes-Benz CLA250?

When diagnosing an oil leak in a 2015 Mercedes-Benz CLA250, it’s essential to adopt a systematic diagnostic approach. Start by locating the leak through a thorough visual inspection of the engine and the area beneath the vehicle, looking for any signs of oil drips or puddles. Checking the oil levels is crucial, as low oil can indicate a significant leak that requires immediate attention. Next, inspect the gaskets and seals for any wear or damage, as these are common culprits for oil leaks. To enhance your search, consider using UV dye, which can be added to the engine oil; when illuminated with a UV light, it will help pinpoint the leak's source more accurately. If the leak remains elusive, conducting a pressure test on the oil system can further assist in identifying the problem. Should these methods not yield results, consulting a qualified mechanic is advisable for a more comprehensive diagnosis. By following these steps, you can effectively tackle the issue of an oil leak in your CLA250, ensuring your vehicle remains in optimal condition.

What are the common causes of oil leaks in a 2015 Mercedes-Benz CLA250?

When dealing with oil leaks in a 2015 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 lead to oil seepage over time. Additionally, the valve cover gasket is another area prone to wear, often resulting in leaks around the engine's top. The oil filter housing gasket can also fail, causing leaks near the oil filter, while the timing cover may develop leaks due to damaged gaskets or seals. Lastly, issues with the oil cooler seal can contribute to oil leaks within the engine compartment. Addressing these leaks promptly is vital to prevent engine damage and maintain the vehicle's performance. Regular inspections and maintenance can help DIY enthusiasts catch these problems early, ensuring the longevity of their CLA250.

How urgent is it to address the oil leak in my 2015 Mercedes-Benz CLA250?

Addressing an oil leak in your 2015 Mercedes-Benz CLA250 is not just a matter of routine maintenance; it is a critical issue that demands immediate attention. An oil leak can lead to a rapid decrease in oil levels, which is essential for lubricating the engine and preventing overheating. If left unchecked, this can result in severe engine damage, leading to costly repairs that could have been easily avoided. Moreover, maintaining proper oil levels is vital for the vehicle's overall performance, ensuring that it runs smoothly and efficiently. Beyond mechanical concerns, an oil leak poses safety risks, as it can create slippery conditions on the road, endangering both you and other drivers. Additionally, neglecting this issue can diminish your vehicle's resale value, as potential buyers are often wary of cars with unresolved maintenance problems. Therefore, it is imperative to address any signs of an oil leak promptly to safeguard your vehicle's performance, safety, and long-term value.

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Common Causes of Oil Leaks in 2015 Mercedes CLA250