2022 Mercedes-Benz GLA45 AMG Is Leaking Oil

Common Causes of Oil Leaks in Your 2022 Mercedes-Benz GLA45 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 2022 Mercedes-Benz GLA45 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 GLA45 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 steps to diagnose the oil leak in a 2022 Mercedes-Benz GLA45 AMG?

To effectively diagnose an oil leak in a 2022 Mercedes-Benz GLA45 AMG, begin with a thorough visual inspection of the engine and undercarriage, looking for any signs of oil accumulation or dripping. This initial step can often reveal the source of the leak without further intervention. Next, check the oil levels to determine if there has been a significant loss, as low levels can indicate a leak. Pay close attention to the gaskets and seals around critical components like the oil pan and valve cover, as wear or damage here is a common culprit. If the source remains elusive, consider performing a pressure test on the oil system, which can help identify leaks by using air pressure and UV dye. Additionally, ensure that the oil drain plug is secure, as a loose or damaged plug can also lead to leaks. If these steps do not yield results, consulting a qualified mechanic is advisable for a professional assessment. By following this diagnostic approach, you can systematically identify and address the oil leak issue in your vehicle.

What are the common causes of oil leaks in a 2022 Mercedes-Benz GLA45 AMG?

When diagnosing oil leaks in a 2022 Mercedes-Benz GLA45 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 wear out over time and lead to significant leaks. Additionally, a faulty valve cover gasket can cause oil seepage, often noticeable around the engine's top. Another potential source of leaks is the oil filter housing gasket; if this component is compromised, it can result in oil escaping from the filter area. Furthermore, worn or damaged oil cooler seals can also contribute to leaks, particularly in high-performance vehicles like the GLA45 AMG. Lastly, keep an eye on various engine components, as cracks or wear in seals, hoses, or connectors can develop over time, leading to oil leaks. Addressing these issues promptly is essential to maintain engine health and performance, making regular inspections and maintenance a vital part of vehicle care.

How urgent is it to address the oil leak in a 2022 Mercedes-Benz GLA45 AMG?

Addressing an oil leak in your 2022 Mercedes-Benz GLA45 AMG is not just a matter of routine maintenance; it is a pressing issue that requires immediate attention. Ignoring an oil leak can lead to severe engine damage due to insufficient lubrication, which is vital for the smooth operation of your vehicle. Additionally, the presence of leaking oil creates a significant fire hazard, especially if it comes into contact with hot engine parts. The longer you drive with an oil leak, the more extensive the damage can become, potentially resulting in costly repairs that could have been avoided with prompt action. By addressing the leak as soon as possible, you not only safeguard the performance and longevity of your GLA45 AMG but also ensure your safety on the road. Therefore, if you notice any signs of an oil leak, it is crucial to take immediate steps to diagnose and repair the issue to maintain your vehicle's optimal performance and prevent further complications.

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2022 Mercedes-Benz GLA45 AMG Oil Leak Causes & Repairs