From
http://fastestlaps.com/comparisons/s...cobalt_ss.html
Subaru BRZ vs
Chevrolet Cobalt SS 
Lap Times (1)
Track BRZ Cobalt SS
Virginia International Raceway 3:18.60 3:20.60
Specs
0 - 100 kph 6.8 s 6.4 s
Power/weight ratio 162 bhp/tonne 161 bhp/tonne
Summary
Discipline
BRZ Cobalt SS
Track Performance 10 points 0 points
Straight line speed 27 points 28 points Total 3728
The verdict
Subaru BRZ is noticeably faster.