With the rise of horsepower, obviously 0-60 times have fallen dramatically. The predicted MY2015 number of 8.2 seconds is an all-time high.
Technology, especially the trends in multi-valve engines with variable valve timing along with 6 speed or greater automatic transmissions is the main driver of the increasing trends of fuel economy along with increasing horsepower, vehicle size, weight and dropping acceleration times. This truly is the golden age.
The report also breaks down the fuel economy numbers by manufacturer. For the last two years, plucky Mazda has come out on top, besting Subaru by a respectable margin both years. This is pretty cool, not just because I'm a Mazda Fanboi, but because Mazda doesn't have any diesels, hybrids, electrics or even CVT's in its line-up. Skyactive is more than marketing. On the other end, the domestics fall to the bottom with their greater mix of large vehicles. FCA has a average of 21.8 mpg for MY2015, compared to Mazda's 30.1 mpg. Hyundai/KIA are back in the report after settling their clean air act violations and VW has been kicked out until Diesel-gate is resolved. Unfortunately for golf-cart enthusiasts, Tesla isn't included. Would it be rated as 0 mpg or infinite mpg or miles per ton of coal burnt?
Drilling down on the key metrics that have some bearing on fuel economy by Manufacturer you can see how Mazda and Subaru sell smaller, lighter, more modestly powered vehicles as compared to FCA. I guess Sergio isn't selling enough 500's to offset the trucks and SUV's.
This is just a small scratching of the surface of the report. If you have some time, take a look at it or at least scroll thru the data visualizations and post some of your observations in the comments.