2019 Mazda CX-5 Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2019 Mazda CX-5 and How to Address Them 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 2019 Mazda CX-5 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 2019 Mazda CX-5 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.

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 diagnostic steps to identify the cause of an oil leak in a 2019 Mazda CX-5?

When tackling an oil leak in a 2019 Mazda CX-5, it's essential to adopt a systematic diagnostic approach that prioritizes simpler methods before progressing to more complex solutions. Start with a thorough visual inspection of the engine and the area beneath the vehicle to identify any obvious signs of oil pooling or dripping. This initial step can often reveal the leak's source. Next, check the oil levels to assess any significant loss, which may indicate a leak's severity. Pay close attention to the oil filter and drain plug, as these components can sometimes be the culprits; ensure they are secure and free from leaks. Additionally, inspect the gaskets and seals around the oil pan, valve cover, and oil filter housing for any wear or damage that could lead to leaks. If the source remains elusive, consider performing a pressure test to evaluate the oil system's integrity. For a more precise diagnosis, adding UV dye to the engine oil can help pinpoint the leak's location when illuminated with a UV light. If these steps do not yield results, consulting a qualified mechanic is advisable for a professional assessment and repair. By following this structured approach, you can effectively diagnose and address the oil leak issue in your Mazda CX-5.

What are the common causes of oil leaks in a 2019 Mazda CX-5?

When dealing with oil leaks in a 2019 Mazda CX-5, 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 leaks. Additionally, a faulty valve cover gasket can allow oil to escape from the top of the engine, creating a mess and potentially affecting performance. Another common source of leaks is a loose or damaged oil filter; if the filter is not secured properly, oil can leak from the housing. Cracks or damage to the oil cooler can also result in leaks, as can worn-out oil seals that deteriorate with age. Addressing these issues promptly is essential to prevent further engine damage and maintain optimal vehicle performance. Regular inspections and maintenance can help you catch these problems early, allowing for a DIY fix before they escalate.

How urgent is it to address the oil leak in my 2019 Mazda CX-5?

Addressing an oil leak in your 2019 Mazda CX-5 is not just a matter of routine maintenance; it is a pressing issue that requires immediate attention. An oil leak can lead to a significant drop in oil levels, which compromises the lubrication of essential engine components. This lack of lubrication increases friction and heat, potentially resulting in severe engine damage that could require costly repairs. Moreover, if oil leaks onto hot engine parts, it creates a fire hazard, putting both your safety and that of others at risk. Additionally, neglecting this issue can adversely affect your vehicle's performance, leading to decreased fuel efficiency and overall functionality. Over time, what may start as a minor leak can escalate into a major problem, causing extensive damage that could have been easily avoided. Therefore, it is crucial to act swiftly and address any oil leaks to ensure the longevity and safety of your Mazda CX-5.

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