Hi everyone!

This January, I picked up a second hand mk3.5 Skoda Octavia estate estate/combi. 1.4 TSI 150hp, manual transmission. I got it at 54k km and have done another 10k since.

Since the beginning I had vibrations from the clutch and gas pedals and rough engine noise. Symptoms were noticeable above 2000 rpms and up to 2500 rpms in all gears.

I have replaced , sparkplugs, dmf, clutch, both inner and outer CV joints, both front axles and engine/transmission mounts. All parts OEM and all work was done at my official local Skoda dealership.

I have also had my tires balanced (twice) and my injectors cleaned.

Although vibrations and noise have become less noticeable, they are still there especially when the engine is underload. For example under hard acceleration, driving uphill, when AC is on, etc.

Yesterday I had someone rev the car at the range (2k-2.5k) I feel the vibrations while I recorded the engine with my phone. This is the Video

I uploaded it on the Skoda subreddit, and people told it definitely doesn't sound normal pointing out potential timing belt/turbo issue.

Does it sound normal to you?

Took it to an independent garage today and they told me it's just how the engine sounds but pretty sure they just didn't bother.

Thank you in advance!

Well, the engine does sound a bit "tapperdy"- i.e. I can hear the lifters and the valves. The 1.4's were never the most refined engine to start off with.

The first thing is this: you need an ODBEleven scanner to go through the car and get a scan done. This way, if there is an issue with any of the modules, you'll know about it now and it is a good starting place for any diagnosis.

Failing that; check the misfire counters on ODBEleven. Increase the revs and make sure you don't have an intermittent misfire. I know you said that had the sparkplugs replaced, but check to make sure the coils aren't failing (or going open-circuit when hot). A rough way to determine a misfire is listen to the exhaust and see if you have "phutt phutt" noise - i.e. a misfire.