2019 Audi S5 Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2019 Audi S5 and How to Address Them Effectively

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Reviewed by
Devin Cabugcal
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 Audi S5 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 Audi S5 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 steps to diagnose the oil leak in a 2019 Audi S5?

To diagnose an oil leak in your 2019 Audi S5, begin with a thorough visual inspection of the engine and undercarriage, looking for any obvious signs of oil such as puddles or stains. Next, check the oil levels to determine if there has been a significant loss, which could indicate a leak. Pay close attention to the oil filter and drain plug, as these are common areas where leaks can occur due to looseness or damage. Additionally, inspect the gaskets and seals for any signs of wear or deterioration that might be contributing to the leak. If the source remains elusive, consider performing a pressure test on the oil system to detect leaks under pressure. For a more precise diagnosis, you can add UV dye to the engine oil and run the engine, using a UV light to pinpoint the leak's location. If these methods do not yield results or if the problem seems complex, it is wise to consult a professional mechanic for a comprehensive evaluation and repair. By following this structured approach, you can effectively diagnose and address oil leaks in your Audi S5, ensuring optimal performance and longevity of your vehicle.

What are the common causes of oil leaks in a 2019 Audi S5?

When dealing with oil leaks in a 2019 Audi S5, 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 wear out over time and lead to leaks. Additionally, valve cover gaskets are known to deteriorate, allowing oil to escape from the top of the engine. Another area to inspect is the oil filter housing gasket; if this component fails, it can result in oil leaks around the oil filter. Furthermore, the camshaft tensioner gasket can also be a source of leaks if it becomes damaged or worn. Lastly, don't overlook the rear main seal, as leaks from this area can indicate a significant issue with oil escaping from the back of the engine. Addressing these leaks promptly is essential to prevent further engine damage, and regular maintenance checks can help you catch these problems early, ensuring your Audi S5 runs smoothly.

How urgent is it to address an oil leak in a 2019 Audi S5?

Addressing an oil leak in your 2019 Audi S5 is not just a matter of routine maintenance; it is a critical issue that demands immediate attention. Ignoring an oil leak can lead to severe engine damage due to inadequate lubrication, which increases friction and heat, ultimately resulting in costly repairs. Furthermore, an oil leak can significantly impair your vehicle's performance, affecting its efficiency and power output, which is particularly concerning for those who value the driving experience. Safety is another paramount concern, as oil can drip onto hot engine components, creating a fire hazard that endangers both the vehicle and its occupants. Additionally, the environmental implications of an oil leak cannot be overlooked; spilled oil can contaminate soil and water sources, contributing to ecological damage. Therefore, if you notice any signs of an oil leak, it is crucial to act swiftly to mitigate these risks and ensure the longevity and safety of your Audi S5.

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