While savvy driving saves gas, some driving techniques popular among hypermilers are dangerous and illegal.

Do:
• Check tire pressure at least once a month and inflate tires to the vehicle manufacturer's standards listed in the owner's manual. Fuel efficiency is reduced by up to 2 percent for each pound of pressure tires are under-inflated.
• Smoothly and easily accelerate and brake.
• Use cruise control to maintain a steady speed.
• Use the lowest grade fuel recommended by the vehicle manufacturer for the climate to avoid engine damage.

Don't:
• Roll through stop signs.
• Drive at erratic and unsafe speeds.
• Tailgate semis to avoid wind resistance. State law requires vehicles traveling under 55 mph to stay 2 seconds behind the vehicle ahead of them and at least 4 seconds behind when traveling over 55 mph.

---

Source: AAA Utah