Recently returned from trip from Austin Tx to Monroe LA. Gas mileage decreased from about 43.3 MPG to 38.5 MPG. A little annoyed by this but I guess I can attribute this to the increased weight in the vehicle. Still taking care in for other thing. Maintenance needed light came on & I assume it may be for a 15,000 mi checkup since it is nearing that mark.
To increase your mileage make sure your tire pressure is at 40 psi (front and rear). Drive with 'ECO Score' menu showing. Adjust the accelerator pedal as required to keep the EV Drive lamp ON as much as possible. View the YOU Tube vedio on Prius C driving tips. Note: Pluse and Glide.