5 series 2012 vs. 2013

Hey guys,
BMW dealer gave me a very good price for the last 520i 2012 car he has, according to him it's exactly the same as 2013, is that right ? Is there any differences no matter how small they are ?
Is it worth paying around 4k dollars less on 2012 or just pay the 4k extra and get 2013.

Thanks for your feedback

I just got a 2013 535i, it's essentially the same car, just some of the packages include different stuff now, such as the HUD is included in the tech package in the 2013 model, but in the 2012 one it's an separate option. The only major difference i noticed is there's a new IDrive interface on the 2013. If you got a good deal on the 2012 and it has all the options you want, might as well go for it