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2020 X5 G05 - Oil Leak Smell and Drips

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Chris P. · rep 0 · May 22, 4:08 AM · 1 replies · solved · Question

Vehicle: 2020 BMW X5 xDrive40i

Hey everyone, I've got a 2020 BMW X5 xDrive40i with about 60k miles on it. Lately, I've been noticing a burning oil smell, especially after driving, and a few small drips on my garage floor. It looks like it's coming from the top/front of the engine.

Is this a common issue for these G05 X5s with the B58 engine? What should I be looking for? Any DIY tips before I take it in? I'm hoping it's not something major.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 4:08 AM

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ClearTheCode admin answer:

An oil leak accompanied by a burning smell is a common concern, especially as BMWs accumulate mileage. For your 2020 BMW X5 xDrive40i (G05) with the B58 engine, there are a few usual suspects:

  1. Valve Cover Gasket (VCG): This is a very common failure point. Over time, the plastic valve cover and its rubber gasket can become brittle and crack, leading to oil seeping onto the exhaust manifold, which causes the burning smell.
  2. Oil Filter Housing Gasket (OFHG): Another frequent leak source. The gasket between the oil filter housing and the engine block can degrade, allowing oil to leak down the front of the engine.
  3. Oil Pan Gasket: While less common than the VCG or OFHG, the oil pan gasket can also leak, especially if the vehicle has experienced impacts or if the gasket has simply aged.

Steps for Diagnosis:

  • Visual Inspection: Carefully inspect the top and front of the engine with a flashlight. Look for fresh oil residue around the valve cover, the oil filter housing, and underneath the vehicle.
  • Clean the Area: If you can safely access the suspected area, clean it thoroughly and then re-check after a short drive to pinpoint the exact source of the leak.

When to See a Shop:

While some DIYers tackle VCG or OFHG replacements, they can be complex, requiring specific tools and torque specifications. If you're not comfortable working on your engine, or if the leak is significant, it's best to take your X5 to a qualified BMW specialist. Ignoring oil leaks can lead to lower oil levels, potential damage to other components (like drive belts), and even fire hazards if oil drips onto hot exhaust components for too long.

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