
Generally, it does not burn engine oil within about 100,000 kilometers. Beyond 100,000 kilometers, it depends on your maintenance condition. There are many possible reasons for engine oil burning, such as using poor-quality oil or oil with viscosity grades that do not meet the requirements. Low-quality engine oil can lead to increased wear. Additionally, oil viscosity that is too low or too high can cause poor engine lubrication, increasing wear on piston rings and cylinder walls, reducing sealing performance, and resulting in oil burning. Below are the reasons for oil burning: 1. Excessive clearance between piston rings and cylinder walls, improper installation of piston rings, or degraded sealing performance allows oil on the cylinder walls to enter the combustion chamber, causing oil burning. Moreover, poor sealing performance of valve seals, damage to the crankcase forced ventilation valve (PCV), or clogged crankcase ventilation ports can increase crankcase pressure, allowing oil to enter the cylinder along with crankcase gases and participate in combustion. 2. Overfilling of engine oil can also cause oil burning. When the oil level exceeds the midpoint, excessive oil pressure can cause more oil to splash into the combustion chamber during engine lubrication. Turbocharger oil leakage. The turbocharger is installed at the front end of the exhaust pipe and operates at very high temperatures. During full-load engine operation, the turbine and pump wheel can reach speeds of 10,000 to 20,000 RPM per minute.

I've been driving a Volkswagen Sagitar for several years. The car uses an EA888 engine, and I started noticing faster oil consumption around 90,000 kilometers. I usually drive gently without aggressive acceleration, but the engine has a slight design flaw where worn piston rings can allow oil to seep into the combustion chamber. Regularly checking the oil dipstick is crucial—I find it best to check every 5,000 kilometers. If the oil level drops significantly, it's important to get it checked at the shop promptly to avoid engine damage. Don't delay oil changes either; using high-quality synthetic oil can help mitigate the issue. Overall, this problem commonly occurs between 70,000 to 100,000 kilometers, but with proper maintenance, it might not become noticeable until around 120,000 kilometers, saving a lot of hassle.

Speaking of engine issues, the Volkswagen Sagitar's oil burning problem is mostly a common ailment with the EA series, such as the EA888 engine which tends to show symptoms between 80,000 to 120,000 kilometers, primarily due to wear on piston rings or valve seals. From my experience, it's related to driving habits—frequent high-speed operation or cold starts can accelerate wear. I recommend owners check the oil dipstick every thousand kilometers and seek timely repairs if consumption is rapid, rather than waiting until blue smoke appears. Use oil products that meet specifications, and regular maintenance can delay the onset of issues, extending engine life—overall, it's manageable.

My Sagitar has been used for a long time, and oil burning usually starts to appear at around 70,000-100,000 kilometers. The key is to maintain it frequently. I use full synthetic oil and insist on changing it every 5,000 kilometers. My friend's car has reached 130,000 kilometers without major issues. High engine heat makes the rings more prone to damage, but don't worry. As long as you check the dipstick regularly and maintain the proper oil level, it can run safely.


