2020 Audi A5 Quattro Is Leaking Oil

Resolve Oil Leaks in Your 2020 Audi A5 Quattro 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 2020 Audi A5 Quattro 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 2020 Audi A5 Quattro 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 steps should I take to diagnose the oil leak in my 2020 Audi A5 Quattro?

To effectively diagnose an oil leak in your 2020 Audi A5 Quattro, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by locating the leak; inspect the area beneath your vehicle for any visible oil spots or puddles, which can provide immediate clues. Next, turn your attention to the engine components, particularly the valve cover gasket, oil pan, oil filter, and oil drain plug, as these are common culprits for leaks. Look for any signs of oil residue or buildup that may indicate a problem. It’s also crucial to check your oil level; a significant drop can signal a leak. Pay special attention to the oil filter, as a damaged or improperly installed filter can lead to leaks. Additionally, examine the oil pan for any cracks or damage, and ensure that the oil drain plug is securely tightened. If these steps do not reveal the source of the leak, or if you feel uncertain about your findings, it’s wise to consult a professional mechanic who specializes in Audi vehicles for further assistance. This methodical approach not only helps in identifying the issue but also ensures that you address it effectively.

What are the common causes of oil leaks in a 2020 Audi A5 Quattro?

When addressing oil leaks in a 2020 Audi A5 Quattro, it's important to recognize the common problems that can lead to these issues. A primary cause is often a degraded or damaged oil pan gasket, which can wear down over time, resulting in significant leaks. Additionally, a worn valve cover gasket can allow oil to escape from the top of the engine, leading to both mess and potential performance problems. Another frequent issue is a faulty oil filter housing gasket, which can also contribute to leaks if not promptly addressed. Leaking camshaft seals are another concern, as they can deteriorate and cause oil to escape from the engine. Lastly, a cracked or damaged oil cooler can serve as a source of leaks, affecting the vehicle's overall efficiency. To maintain the performance and reliability of your Audi A5 Quattro, regular maintenance and timely inspections are essential for identifying and resolving these issues early.

How urgent is it to address the oil leak in my 2020 Audi A5 Quattro?

Addressing an oil leak in your 2020 Audi A5 Quattro is not just a matter of routine maintenance; it is a pressing issue that requires immediate attention. An oil leak can significantly reduce oil levels, leading to inadequate lubrication of engine components, which may result in severe engine damage over time. Furthermore, neglecting this issue can cause the engine to overheat, potentially leading to costly repairs or even complete engine failure. The risks extend beyond mechanical failure; leaking oil can create a hazardous environment, as it may drip onto hot engine parts, increasing the risk of a fire. Therefore, it is crucial to act swiftly and resolve any oil leaks to maintain the performance, safety, and longevity of your vehicle.

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2020 Audi A5 Quattro Oil Leak Causes & Repair Costs