2020 Volkswagen Tiguan Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2020 Volkswagen Tiguan and How to Fix Them

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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 2020 Volkswagen Tiguan 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 Volkswagen Tiguan 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 are the potential causes of an oil leak in a 2020 Volkswagen Tiguan, and how should I diagnose them?

When diagnosing an oil leak in your 2020 Volkswagen Tiguan, it's essential to adopt a systematic approach that prioritizes simpler checks before delving into more complex issues. Start by thoroughly cleaning the engine and the area beneath the vehicle to remove any old oil residue, which can obscure the source of the leak. Once clean, run the engine for a few minutes and observe for fresh oil drips, focusing on common leak points such as the valve cover gasket, oil pan gasket, and oil filter. Next, check the oil drain plug for tightness and inspect it for any signs of damage. If the leak persists, examine the oil pan for cracks and consider the condition of internal components like piston rings and valve seals, which may require a compression test for further evaluation. Utilizing UV dye can also be a helpful method to trace the leak's origin. If these steps do not lead to a clear diagnosis, consulting a qualified mechanic or a Volkswagen dealership is advisable to ensure a thorough inspection and appropriate repairs. By following this structured diagnostic approach, you can effectively identify and address the oil leak in your Tiguan, potentially saving time and repair costs.

What are the common causes of oil leaks in a 2020 Volkswagen Tiguan?

When diagnosing oil leaks in a 2020 Volkswagen Tiguan, 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. Similarly, a faulty valve cover gasket can allow oil to escape from the top of the engine, creating noticeable leaks. Another potential source is the oil filter housing gasket; if this component is damaged, it can result in oil leaking from the filter area. Additionally, a damaged oil cooler may contribute to oil leaks, as can a loose or damaged drain plug, which can cause oil to seep from the oil pan. Addressing these issues promptly is essential to maintain engine health and performance, and regular inspections can help identify these problems early, allowing DIY enthusiasts to take action before more significant damage occurs.

How urgent is it to address the oil leak in my 2020 Volkswagen Tiguan?

Addressing an oil leak in your 2020 Volkswagen Tiguan is not just a matter of routine maintenance; it is an urgent issue that requires immediate attention. An oil leak can lead to a significant loss of engine oil, which is essential for proper lubrication. Without adequate lubrication, engine components can suffer from increased friction, leading to premature wear and potential failure. Moreover, neglecting an oil leak can result in engine overheating, a serious condition that can cause catastrophic damage and may even lead to complete engine failure. The safety risks associated with oil leaks cannot be overlooked either; oil dripping onto hot engine parts poses a fire hazard, putting both you and your vehicle at risk. Timely intervention not only helps maintain the performance and longevity of your Tiguan but also ensures your safety on the road. Therefore, if you notice any signs of an oil leak, it is crucial to address the issue promptly to avoid costly repairs and ensure the reliability of your vehicle.

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2020 Volkswagen Tiguan Oil Leak Causes & Repairs | RepairPal