Typical mid-size vehicles might include a Pontiac Grand Am or a Nissan Altima. A full-size rental might include a Ford Taurus or a Chevy Impala. A mid-size vehicle with one rental car company may give you more room than a vehicle in the same class with a different company.

When you rent a car with unlimited mileage, you do not pay for mileage. Your charge is the same whether you drive 20 miles or 2,000. This is a benefit to drivers who plan to take a rental car on a long trip or cover a large distance.

A typical compact model is the Ford Focus. The biggest difference between an economy car & a compact car is the size. While both vehicle classes are generally very affordable to rent & drive (offering great fuel efficiency), economy cars are generally slightly smaller than their compact counterparts.