According to the Associated Press, Oregon may write a bill that would apply a mileage tax to vehicles getting at least 55 miles per gallon. Lawmakers would track a car's mileage with technology such as a smartphone application or GPS data. No rates have been proposed, and lawmakers may simplify things by offering a flat annual fee instead of vehicle tracking, the AP says.
Oregon has been proposing such a measure for the past decade or so, though the most recent attempt at such a law was rejected in 2011. One bill proposed applying a 1.2-cent per-mile tax. That would equal out to $144 a year for 12,000 miles a year of driving. A few years ago, Oregon tested a GPS-based system that was accurate and reportedly did not encroach too deeply into personal privacy. It collected data all the time, but only connected to a network to transmit data when the vehicle was refueled.
Next door, Washington State's electric-vehicle owners will start being assessed a $100 fee tacked onto their vehicle's registration this year. National mileage taxes have been discussed, but never very seriously.