my Volvo XC60 First Generation (2008-2017) has poor fuel economy what could be the reason

Solution

1. Preparation

• Tools Required: OBD-II scanner, fuel pressure gauge, socket set, torque wrench, tire pressure gauge.
• Ensure the vehicle is parked on a level surface and the engine is cool.

2. Address Fault Codes

• Connect the OBD-II scanner and retrieve any fault codes.
• Document codes and research them to determine potential repairs needed.
• Clear the codes and take the vehicle for a short drive to see if they return.

3. Replace Air Filter

• Tools Required: Socket set.
• Open the hood and locate the air filter housing.
• Remove the bolts or clips securing the housing cover.
• Take out the old air filter and install a new one, ensuring it fits securely.
• Reattach the housing cover and secure it.

4. Fuel Pressure Check

• Attach the fuel pressure gauge to the fuel rail access port.
• Start the engine and record the fuel pressure reading.
• If the pressure is below specifications, consider replacing the fuel pump.

5. Clean or Replace Fuel Injectors

• If injectors are dirty, use a fuel injector cleaner or remove them for professional cleaning.
• If leaking, replace the faulty injectors with new ones.

6. Tire Inspection and Inflation

• Use a tire pressure gauge to check each tire’s pressure.
• Inflate tires to the manufacturer’s recommended PSI.
• Inspect tread depth; replace any excessively worn tires.