Nice jam in my ninth Mustang as of right now it is a '14.iam thinking of getting another Mustang for drag and some street duty.
I'd go for a Volkswagen Jetta TDI with manual transmission. It has a diesel engine, which if taken care of they are known to go 1 million miles. Just make sure that the timing belt/water pump has been changed in the past 70k miles or so. 55 miles per gallon doesn't hurt, either.
Mustangs are fast, and TDI's get great mileage... But cant fit 6 girlies in them And theres no room to "Stretch out"