Did u idle or get stuck in heavy traffic alot during this 500 miles? I'd also assume you havent been driving it hard? It does sound low but I wouldn't say it's abnormal, considering the engine hasn't been broken in and running on winter gas by now. Check your tailpipe and see if there's alot of black soot built up, which would indicate that ur running rich. FYI the car does get pretty poor mpg in local driving, I've seen as bad as 15mpg in pure local/stop and go traffic conditions.
2013 X1 28i Sport - AW/Coral Red/Ultimate/Cold/Lighting (Delivered on 12/8/12)
2011 X5 35i Sport Activity - AW/Blk/Aluminum (GONE)
2005 X3 3.0 (GONE)
2006 Subaru Legacy GT (GONE)
2001 Honda Prelude modded (GONE)