Very intermittent screeching noise.

Hello all.

I've owned my current Octavia 1.5tsi dsg SEL estate for around 8 months, now. It's on an 20 plate with fssh, 50k from new.

I have a very intermittent screeching noise that seems to be coming from the mid to front end of my car. Occasionally occurs, after the car is fully warmed up, with or without the aircon on, only under heavy load or from a hill start, once moving with my foot down a bit. It's a screeching type sound that lasts for around 2 seconds. Not during tick over, but could occur at any speed. Originally I thought it may have been the aircon compressor or compressor pully, but I've now realised that it can occur with the aircon off or on.

I dont think its a brake related or wheel related sound.

My thoughts, dsg, alternator belt?

I don'tthink its at the point where it would be easy to diagnose, as its not constant.

I also have a Skoda extended warranty, until Nov, but at this point I don't think I'd waste my money having Skoda look at it, until I was a bit more sure what may be causing it and if it was easily diagnosed/replicated.

Any ideas?

Thanks.

Edited 30 minutes ago30 min by Phoenixboy