Several factors could explain such low fuel economy:
* Driving Habits: Aggressive acceleration, excessive idling, and frequent short trips significantly reduce fuel efficiency.
* Vehicle Condition: Issues like a malfunctioning oxygen sensor, clogged air filter, dirty mass airflow sensor, worn spark plugs, low tire pressure, or problems with the transmission can all drastically decrease mpg.
* Engine Issues: Problems with the engine itself, such as low compression or a faulty fuel injector, can lead to poor fuel economy.
* Weight: Carrying excessive weight in the vehicle will reduce fuel efficiency.
* Terrain: Driving frequently uphill or in stop-and-go traffic will lower your mpg.
* Type of fuel used: Using lower-quality fuel can impact efficiency.
What to do:
1. Check your driving habits: Try to drive more smoothly and efficiently.
2. Inspect your vehicle: Check tire pressure, and consider replacing air filters, spark plugs, and other wear items as needed.
3. Get a diagnostic scan: Have a mechanic perform a diagnostic scan to check for any trouble codes that might indicate underlying issues. This will help identify potential problems with the engine, transmission, or other systems.
4. Consider professional servicing: A mechanic can perform a comprehensive inspection to identify and address any mechanical issues affecting fuel economy.
If you are consistently getting only 13 mpg, it's crucial to have your 2006 Ford Explorer inspected by a qualified mechanic to diagnose and address the underlying cause. Ignoring the problem could lead to more significant and costly repairs in the future.