2022 Mercedes-Benz CLA35 AMG Is Leaking Oil

Common Causes of Oil Leaks in Your 2022 Mercedes-Benz CLA35 AMG and How to Address Them

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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 2022 Mercedes-Benz CLA35 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 2022 Mercedes-Benz CLA35 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 first steps to diagnose an oil leak in a 2022 Mercedes-Benz CLA35 AMG?

When diagnosing an oil leak in your 2022 Mercedes-Benz CLA35 AMG, begin with a thorough visual inspection of both the engine and the undercarriage. Look for any visible signs of oil, such as puddles or stains beneath the vehicle, which can provide immediate clues about the leak's location. Next, check the oil levels in the engine; a significant drop may indicate a leak that needs addressing. Pay close attention to the oil filter and drain plug, as these components are common culprits for leaks—ensure they are secure and free from oil residue. Additionally, inspect the gaskets and seals, particularly the valve cover gasket and oil pan gasket, since these areas are prone to wear and leakage. If the source of the leak remains elusive, consider using UV dye in the engine oil, which can help pinpoint the leak when illuminated with a UV light. By following these steps, you can effectively narrow down the potential causes of an oil leak and take the necessary actions to resolve the issue.

What are the common causes of oil leaks in a 2022 Mercedes-Benz CLA35 AMG?

When dealing with oil leaks in a 2022 Mercedes-Benz CLA35 AMG, it's crucial to understand the common culprits that may be at play. One frequent issue is a degraded or damaged oil pan gasket, which can deteriorate over time and lead to leaks. Additionally, the valve cover gasket is another component that can wear out due to heat and age, resulting in oil seeping from the top of the engine. Another potential source of leaks is the oil filter housing gasket; if this part is faulty, it can cause oil to leak around the oil filter area. Furthermore, keep an eye on the oil cooler lines, as they can develop leaks if they become damaged or worn. Lastly, cracked or damaged oil seals within the engine or other components can also lead to oil leaks. Addressing these issues promptly is essential to prevent engine damage and maintain optimal vehicle performance, making regular maintenance and inspections vital for any DIY enthusiast.

How urgent is it to address the oil leak in a 2022 Mercedes-Benz CLA35 AMG?

Addressing an oil leak in a 2022 Mercedes-Benz CLA35 AMG is of utmost urgency due to the serious implications of neglecting this issue. An oil leak can lead to a significant loss of lubrication, which is essential for the engine's smooth operation. Without adequate lubrication, the engine is at risk of overheating, which can cause severe damage to its components, potentially resulting in costly repairs or even complete engine failure. Moreover, oil leaks can create safety hazards; leaking oil may drip onto hot engine parts, increasing the risk of fire, which poses a danger to both the vehicle and its occupants. Additionally, timely maintenance of such issues is crucial for preserving the vehicle's resale value. A well-maintained car without unresolved problems is far more appealing to potential buyers. Therefore, it is imperative to address any oil leaks as soon as they are detected to ensure the vehicle's performance, safety, and longevity.

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2022 Mercedes-Benz CLA35 AMG Oil Leak Causes & Repairs