On average which of these two vehicles get the best gas milage if you were renting it for a vacation, a minivan or and SUV?

On average which of these two vehicles get the best gas milage if you were renting it for a vacation, a minivan or and SUV?
Which vehicle get the best gas milage on average, a minivan or an SUV

Depends on the model you can check EPA ratings

I agree, you need to know the models... tho' generally I expect minivans to get a little better gas mileage to "comperable" suvs.

Call the rental place and see, as stated, what models are available. You can easily search for the estimated mpg.