probably the CTS... provided it's not the V.
the highest CTS uses the same engine as a base corvette, but weighs more, so it'll use more fuel.
honestly, if you can afford a CTS or a Vette, you needn't worry about the cost of fuel.
maybe wait for the camaro instead. cheaper and better on fuel.
the camaro V-6 puts out more HP and torque than the mustang GT's V-8. and the camaro V-8 is the same as the vette and CTS.
all of them have displacement on demand on the V-8s. so you're only using 4 cylinders when you're not "pushing it".
