Who needs extra bells and whistles? Economy cars are the most popular rental car category for travelers in Thailand, and for good reason. You'll enjoy incredible fuel economy as you navigate the streets of Bangkok and Udon Thani in this small car. They're nimble, easy to park, and easy on your bank balance.That said, Thailand is known for its coral reefs, sandy shores, and rolling hills. Many eager adventurers leave the city to check out those breathtaking scenes. If that sounds like something you'd be into, rent a full-size car or an SUV. Even if you don't intend to take the path less traveled, you'll be glad you have the extra legroom.