Helping the environment is easy when you sit behind the wheel of a Prius. This hybrid hatchback has been making an impact, or perhaps reducing its impact, since the first U.S. model release in 2001. You love that this electric-assist engine gets at least 40 MPG in older models and 50 MPG in the newer models. For short or long trips, this Toyota Prius offers plenty of fuel economy. There is plenty of room for the family in the four-door hatchback, but you can also choose the classic two-door Prius for your ride. The long-lived Prius battery lasts for at least eight years or 100,000 miles. If you do end up replacing it, you can find potential deals through the reliable sellers on eBay that ease the impact on your budget. The overall fuel savings that this eco-sensitive vehicle offers makes up for the occasional repair cost. Interior features, like the automatic climate control with dust and pollen filtration and six-way adjustable driver's seat, also make your experience on the road perfectly comfortable.