Calculations off?
 

Just looking over vehicles. The calculations appear to be off in places possibly. Most noticeably that I have seen is the 2012 Mazda 3. Previous years show it in the mid 20's but it shows the 2012 model at 20.3 average mpg. Looking at the graphs for the 2012 model shows 20 mpg to be on the far right with very few vehicles below that and a whole lot above it. Average looks to be closer to 30 from a quick glance at the graphs. Is it possible something isn't being calculated somewhere? I wonder if others are affected in the same way.