2018 Audi TT RS Quattro Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2018 Audi TT RS Quattro and How to Address Them

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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 2018 Audi TT RS 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 2018 Audi TT RS 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.

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 initial steps to diagnose an oil leak in a 2018 Audi TT RS Quattro?

To effectively diagnose an oil leak in your 2018 Audi TT RS Quattro, start by visually inspecting the engine and surrounding components for any visible signs of oil. Pay close attention to areas around the oil pan, transmission, and any gaskets or seals, as these are common culprits for leaks. Next, check the oil levels in your engine; a significant drop can indicate a leak that needs immediate attention. Don’t forget to look underneath the vehicle for any oil puddles or drips, which can help pinpoint the leak's location. If the source remains elusive, consider using UV dye, which can be added to the oil to help trace the leak with a UV light. If you still cannot identify the issue, it may be wise to consult a professional mechanic for a more thorough diagnosis. By following these steps, you can systematically approach the problem and potentially resolve the oil leak efficiently.

What are the common causes of oil leaks in a 2018 Audi TT RS Quattro?

When diagnosing oil leaks in a 2018 Audi TT RS Quattro, 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, leading to leaks. Additionally, valve cover gaskets are known to deteriorate, resulting in oil escaping from the engine. Another area to inspect is the oil filter housing gasket; if this component fails, it can cause oil to leak around the filter housing. Furthermore, both the crankshaft and camshaft seals are susceptible to wear, which can lead to leaks from the front of the engine. Addressing these issues promptly is vital, as neglecting oil leaks can lead to more severe engine damage. Regular maintenance and thorough inspections can help you catch these problems early, ensuring your Audi TT RS Quattro remains in optimal condition.

How urgent is it to address the oil leak in my 2018 Audi TT RS Quattro?

Addressing an oil leak in your 2018 Audi TT RS Quattro is not just a matter of routine maintenance; it is a critical issue that demands 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 the oil leaks onto hot engine parts, such as the exhaust system, it creates a serious fire hazard, putting both your safety and your vehicle at risk. Additionally, neglecting this issue can adversely affect your car's performance, leading to decreased fuel efficiency and power output. By addressing the oil leak promptly, you not only safeguard your vehicle's performance but also prevent more extensive and expensive repairs down the line. Therefore, it is crucial to act swiftly to maintain the integrity and longevity of your Audi TT RS Quattro.

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