[chittychittybangbang]

I hope you mean diesel

Because of the snow storm it's possible it's frozen. Slowly pour windshield washing fluid around the edge. Use a hair dryer to melt the area around the edges. Or use lock deicing fluid, it used to be common before almost every car came with key fob to unlock.

I believe that if you have a 2010 the fuel door needs to be pushed in to open it. The 2009 uses a button solenoid.

 

[chittychittybangbang]

The 2010+ have the press down on the door release. Your 2009 should have the button. Is there a manual open pull somewhere in the trunk area? Not sure since I don't have a sportwagen. chekc your owner's manual