And even when and how you fill up your car can play a part.
AAA suggests the best time to fill your car is at cooler temperatures. That's because gas fumes heat up at warmer temps and create ozone. AAA also recommends against topping off the tank, which can release gas fumes into the air, canceling the benefits of the gas pump's anti-pollution devices.
Distributed by Internet Broadcasting. This material may not be published, broadcast, rewritten or redistributed.