Saturn Sports Coupe Aerodynamics

[Peakster]

I've been checking out the Saturn sports coupes lately (hey, the Geo won't last forever you know) and have been comparing the SC1 with the SC2. I like the SC1 because it looks just like the SC2, tends to be a lot cheaper than its dual cam version, better expected fuel economy, and it has its peak torque at lower rpm.

However, I noticed one large difference about the 2 models in terms of aerodynamics: the SC2 has a Cd of 0.31 while the SC1 has a Cd of 0.33!

Other than the wing mirrors being the same colour as the body with the SC2 the cars look virtually the same to me. Why would the SC1 have worse drag than the SC2?

SC2 & SC1:
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