Why is my Toyota Camry experiencing poor fuel economy?

Poor Fuel Economy in Toyota Camry (2018-present, XV70)

Repair Instructions

1. Replace Air Filter:

   • Follow the air filter inspection steps above to remove the old filter and install a new one.

2. Fuel System Component Replacement:

   • If pressure readings indicate a faulty fuel pump or filter, replace them:
     • Fuel Pump Replacement:
       1. Disconnect the battery.
       2. Relieve fuel pressure by removing the fuel pump fuse and running the engine until it stalls.
       3. Remove the fuel tank (if necessary) and replace the pump.
     • Fuel Filter Replacement:
       1. Locate the filter (typically along the fuel line).
       2. Disconnect the fuel lines, replace the filter, and reconnect.

3. Repair or Replace Vacuum Hoses:

   • Cut out damaged sections and replace with new hoses, ensuring a secure fit.

4. Change Engine Oil:

   • Drain the old oil, replace the oil filter, and refill with the appropriate oil per manufacturer specifications.

5. Replace Spark Plugs:

   • Install new spark plugs, ensuring they are gapped correctly per manufacturer's specifications.

Final Checks

• Test Drive: After completing repairs, take the vehicle for a test drive to monitor fuel economy improvements.
• Recheck Codes: After repairs, clear any trouble codes and monitor for reoccurrence.

Conclusion

If poor fuel economy persists despite these repairs, consider more advanced diagnostics or consult a dealership for further evaluation. Factors like transmission issues or engine control module (ECM) failures could also contribute.