Why is my 2006 Dodge Caravan getting poor gas mileage?
Dirty fuel injectors and faulty oxygen sensors cause most poor gas mileage in 2006 Dodge Caravans. Owners report drops to 13-17 MPG. EPA rates your van at 17 MPG city and 24 MPG highway. Real drivers get 12-21 MPG. One owner reached 27-31 MPG after fixes.
Poor mileage costs you money. Gas adds up fast on these vans. Focus on common fixes since you changed plugs, filters, and the fuel pump.
Top Causes
These problems cut fuel economy. Check them in order.
| Cause | Symptoms | Fix Cost |
|---|---|---|
| Dirty fuel injectors | Slow acceleration. Low MPG. Clogs from old fuel. | Clean: $100 to $200 |
| Faulty oxygen sensors | No check engine light. Engine burns extra gas. | Replace: $150 to $300 each |
| Clogged catalytic converter | Rattles at idle. Blocks exhaust. | Clean: $200. Replace: $500 to $1,200 |
| Bad mass airflow sensor | Wrong air readings. Poor fuel mix. | Clean or replace: $50 to $250 |
| Spark plug tube seal leaks | Oil leaks cause misfires. Low economy. | Fix: $400 to $600 |
Other issues hurt MPG too. Stuck brakes create drag. Low tire pressure or bad alignment costs 1-2 MPG. Old transmission fluid causes sloppy shifts. Hard acceleration and speeds over 65 MPH kill efficiency.
Action Steps
Diagnose and fix fast with these steps.
- Scan for codes. Buy an OBD2 scanner for $20. Many problems hide without lights.
- Clean fuel injectors. Add Lucas fuel cleaner to your tank. Or get a pro flush.
- Test oxygen sensors. Auto stores check them free. Replace bad ones first.
- Check brakes and tires. Set tires to 35 PSI. Feel for drag on brakes.
- Inspect catalytic converter. Listen for rattles. Feel exhaust flow.
- Clean mass airflow sensor. Spray with MAF cleaner. Do not touch the wire.
Drive smart to boost MPG. Stay at 55-65 MPH. Coast to stops. Use cruise control. These tips add 2-4 MPG.
Sidekick tracks your fuel use in the app. Spot trends and save $200 or more a year on gas.
Fix now. Your Caravan lasts to 200,000 miles with care. Start with a scan and cleaner. See better MPG soon.