Hi all,

I have a 2021 Octavia MKIV 1.5 TSI e-TEC (petrol, DSG). Today I opened the fuel flap to refuel and found some liquid in the filler well around the neck (photo attached). I wiped it away before checking whether it was water or petrol, so I can’t say for sure. There was no strong petrol smell, but I’d like to rule out a problem.

I’d also like to check whether the opening is normal. As far as I can tell, there’s no silver flap or valve visible inside the neck. Should there be one? Could an owner with the same model post a photo of their filler neck with the cap off so I can compare?

A few specifics that would help me:

1. Does your filler neck have a flap or valve inside, and what does it look like?

2. Has anyone had fluid pooling in this area, and was it fuel or water? What was the cause?

3. If you’ve had this repaired, was it covered by warranty, and what was the fix?

Extra details: the car hasn’t been washed since the last refuel, and I haven’t noticed any smell or drips under the car.

Thanks in advance!

Edited 3 hours ago3 hr by OctaviaMK4etec1-5

How my MK3 looks

It’s a strange setup

I reckon it’s water build Up

Just keep an eye on it

That looks pretty typical. The fluid is just water from when it rains - there is a small drain hole at the base of the black plastic surround that allows any that collects to run down through a tube to the wheel arch (you can just about see it in your picture). That will be blocked so just push some strimmer wire or similar through it gently to clear and it'll run away.

What skomaz said. If you didn't notice a strong smell of petrol when you mopped it out then it's just water.

As @skomaz says it's a blocked drain tube. I had the same issue with Mrs Moley's Kamiq recently. I removed the blockage with a thin piece of wire.

The drain hole is in the area marked with the yellow circle.

Moved to Octavia MkIV forum.