2021 Mazda CX-5 Is Leaking Oil

Discover the Common Causes of Oil Leaks in Your 2021 Mazda CX-5 and How to Address Them Effectively

Find Repair Location
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 2021 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 2021 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 steps to diagnose an oil leak in a 2021 Mazda CX-5?

To effectively diagnose an oil leak in your 2021 Mazda CX-5, start by locating the leak, which involves inspecting the area where you typically park for any oil puddles or drips. This initial step can provide immediate clues about the leak's source. Next, check the oil level using the dipstick; a significant drop may indicate a leak that needs attention. After confirming the oil level, examine the oil filter and drain plug for any signs of leakage, as these components are often the culprits. If everything appears secure, turn your focus to the gaskets and seals around the engine, looking for any wear or damage that could lead to leaks. For a more thorough investigation, consider adding UV dye to the engine oil and running the engine; this will allow you to use a UV light to pinpoint the leak's origin. If the source remains elusive, performing a pressure test can help identify leaks within the oil system. Should these methods not yield results, consulting a mechanic is advisable for a professional diagnosis and repair. By following these steps, you can systematically approach the issue and potentially resolve the leak without extensive mechanical knowledge.

What are the common causes of oil leaks in a 2021 Mazda CX-5?

When dealing with oil leaks in a 2021 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 noticeable leaks. Another potential source is a leaking oil filter; if the filter is loose or damaged, it can result in oil seeping from the filter housing. Furthermore, a damaged or improperly tightened oil drain plug can also cause oil to leak from the oil pan. In rare instances, a cracked engine block may be the source of the problem, although this is less common. To effectively address these issues, regular maintenance and inspections are essential, as they can help identify potential leaks early on, preventing further damage to your engine and ensuring the longevity of your Mazda CX-5.

How urgent is it to address an oil leak in a 2021 Mazda CX-5?

Addressing an oil leak in your 2021 Mazda CX-5 is not just a matter of routine maintenance; it is a pressing concern that requires immediate attention. Ignoring an oil leak can lead to severe engine damage, as the lack of adequate lubrication can cause critical components to wear out prematurely. This not only compromises the performance of your vehicle but can also result in costly repairs down the line. Moreover, oil leaks pose significant safety risks, as oil can drip onto hot engine parts, creating a fire hazard. The environmental implications are also considerable, as leaking oil can contaminate local ecosystems. Therefore, it is crucial to act swiftly when you notice any signs of an oil leak to safeguard your vehicle's integrity, ensure your safety, and protect the environment.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.