Looking at a 2012 CC here locally. Beautiful car...
One quick question: Does it REQUIRE premium gas??
I mean, is there anyone out there using regular, and does that void the warranty? LOL
Yes Premium Gas. I have not tried regular and I doubt anyone else has unless it was by mistake. If your looking for the 2012 go with the R Line
91 recommended. The owners manual says no lower than 87. Considering premium is usually $0.30 more than regular your looking at a difference of $5 bucks a fill up, assuming a 17 gal fill up. I'd stick with premium to avoid a loss of performance.
Just my opinion.
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The CC is a "Premium Recommended" car, not "Premium Required". I'm sure you lose some performance with a lower octane. I get a mid grade, and my tank MPGs dropped from 32.5 to 32.0, or a very immaterial amount. Although I drive almost all highway, and with a relatively light foot.
Edmunds explained this well last year: