Well thats not a big deal, most local cars have these issues, i had to put some liquid silicone on the inner side of the door pannels to get rid of the sqeeking sounds coming from my yaris, the lower end of the door pocket has small clips which joins it to the main pannel, on the inner side, visit to the toyota outlet didn't work cause the sound only came in the morning... so i myself took the pannel out, examined it thoroughly, found the problem and tweeked it myself.
Metal Screeching has reduced a little with belt adjustment and lubrication, lets see how long does the solution work,
Has anyone done seat covers and floor matting, if yes, please share a few pics, cant decide on back or beach color