Are any of the accessories from a 2011 compatable with the 2015? I have the car cover, nose mask, all season mats, cargo tray, window visors and int. Illumination.

 

Cargo tray fits, but the pointed wings are too long to fit 'perfectly' if you dont mind it being a bit scrunched it will fit okay and do its job.

All season floor mats no go. Completely different layout in the 2015 vs 2011.

Car cover fits just about perfectly just like on my 2011. Not many people will use the cover kit, but since I dont have a garage it is extremely handy during the winter.