Considering the Agera is one of my favourite cars (It's my iPad backgroung right now), it looks almost spot on! One thing I recommend is to not slant the pillars too far. Other than that, nothing can top this :)
Very nice work! I think you really could have done a better job on the headlights, but otherwise it's pretty good! Overall it reminds me of Jens & Sven's CCX. Another thing is the photography. Maybe you could use some boards or something for background and not just carpet?
Lovely work, you've got all the details and the interior and engine bay both look superb. I'm not a fan of the way you did the headlights, however, as the real cars aren't square. Nevertheless, this is an excellent build!