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Thought my SS got bad gas milage
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01-27-2012, 09:08 PM
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zogster
Drives: 2014 RRM ZL1 M6
Join Date: Jul 2011
Location: IL
Posts: 661
The '03 CTS has the old Opel 3.2L engine. Doesn't have the modern technology like the '04 and up with the 3.6L. Still you would think the mileage would at least be pretty decent, that's really bad.
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