Your Mileage Will Still Vary
EPA has improved its methods for estimating fuel economy, but your mileage will still vary.
EPA tests are designed to reflect "typical" driving conditions and driver behavior, but several factors can affect MPG significantly:
- How & Where You Drive
- Vehicle Condition & Maintenance
- Fuel Variations
- Vehicle Variations
- Engine Break-In
Therefore, the EPA ratings are a useful tool for comparing the fuel economies of different vehicles but may not accurately predict the average MPG you will get.