I have been offered a 2005 octavia elegance allow wheel, will this fit my FL Octavia Elegance, as a spare wheel.

will it go into the boot hole, or is that just for space savers,

also would it be a different model.

Yes, it will fit fine as a spare. Yes, it will fit fine in the spare wheel well.

I have been offered a 2005 octavia elegance allow wheel, will this fit my FL Octavia Elegance, as a spare wheel.

will it go into the boot hole, or is that just for space savers,

also would it be a different model.

If your 2010 has vega wheels then the 2005 vega will fit.

They come with Crateris 16"s now. Stil 6.5J / 205, 112 PCD, ET ~50 though, so it's all good. Fine as a spare, just cosmetically different.