2021 Mazda 3 BaseFACTORY OEM SERVICE PROCEDURE

Fuel efficiency monitor

  • Displays the fuel efficiency information.

Fuel efficiency monitor verification procedure 

  1. Select the "Information" button on the Home screen.
  2. Select [Fuel Efficiency Monitor] on the information screen to display the guidance.
    • The buttons on the menu screen operate as follows:
Display Content
G13718748Courtesy of MAZDA MOTORS CORP.
1 Displays the information regarding the fuel efficiency.
2 Displays the system operation status.
3 Displays the settings for the fuel efficiency monitor.

Fuel Consumption 

  • The information regarding the fuel economy is displayed.
Display Content
G13718749Courtesy of MAZDA MOTORS CORP.
1  
  • Displays the fuel economy for the past 60 minutes.
    • Displays the fuel economy every minute for the past 1 to 10 minutes.
      • Displays the fuel economy every 10 minutes for the past 10 to 60 minutes.
2 Displays the average fuel economy over the past 5 resets and after the current reset.
3  
  • Displays the average fuel economy from when the ignition is switched ON (engine on) to the current time.
  • The average fuel economy is updated every 60 s.
  • If there is no average fuel economy data, displays "- -".

Energy Flow Monitor 

  • The information regarding the energy flow monitor is displayed.
Display Content
G13718750Courtesy of MAZDA MOTORS CORP.
1 The condition of each cylinder is displayed by colors. The operating cylinders are displayed in red.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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