Left my car in the garage the weekend, and this morning when I started it, there was a strange squeel each time I pushed down the accelerator pedal. It's related to engine revs - the more I revved it, the more it squeeled! It sounded like the more I revved it, that air was being pulled in through a small slot somewhere.
Checked under the bonnet and all looked normal.
After a few minutes warm up, then squeel had gone
I wonder whether it's the fan belt (is there such a thing or is there only the thick cam belt on the GTI?)
Anyone else had this during this cold period?