* Lower MPG: for higher-performance models with larger engines. Think low teens to mid-20s MPG combined (city and highway).
* Higher MPG: for models with smaller engines or those emphasizing fuel efficiency (though even these are not known for exceptional fuel economy compared to smaller cars). You might see upper 20s MPG in ideal conditions.
To get a precise MPG estimate, you need to specify the year, model, and engine of the Corvette in question. You can then find the EPA estimates on the official EPA website (fueleconomy.gov) or the manufacturer's website (Chevrolet).