Fuel unit is shown in L instead of G for en_US

[derhally]

Describe the bug

I just installed this addon or a XC90 T8 2025 PHEV and it works well. The only issue so far is that it shows liters instead of gallons even though the locale is set to en_US

Expected behavior:

Units fuel for US should be in gallons.

Screenshots:

Version info:

v1.10.5

[billraff]

You could create a sensor to covert this:

template:

• sensor:
  • name: "Fuel Level in Gallons"
    unit_of_measurement: "gal"
    state: >
    {{ states('sensor.car_fuel_level') | float * 0.264172 }}

[derhally]

Thanks. that's what I ended up doing.

[github-actions]

This issue is stale because it has been open 15 days with no activity. Remove stale label or comment or this will be closed in 5 days.

[photogeek134]

Thanks. that's what I ended up doing.

I also encountered this "bug" and couldn't stand seeing the mismatched units, so I did the same. In case you didn't catch it, you'll also need to convert the Average Fuel Consumption (reported as L/100km) and the Average Energy Consumption (reported as kWh/100km). After making the below updates my custom dashboard matches what's in the Volvo Cars app.

Here's what I have in my template.yaml:

- sensor:
    - name: "Lars - 2025 XC90 T8 Fuel Level Gallons"
      unique_id: "volvo_[VIN]_fuel_level_gallons"
      unit_of_measurement: "gal"
      state: "{{ (states('sensor.volvo_[VIN]_fuel_level') | float * 0.264172) | round(2) }}"
      availability: "{{ is_number(states('sensor.volvo_[VIN]_fuel_level')) }}"
      device_class: "volume_storage"

    - name: "Lars - 2025 XC90 T8 Average Fuel Consumption Gallons"
      unique_id: "volvo_[VIN]_average_fuel_consumption_gallons"
      unit_of_measurement: "mi/gal"
      state: "{{ (235.2145 / states('sensor.volvo_[VIN]_average_fuel_consumption') | float) | round(2) }}"
      availability: "{{ is_number(states('sensor.volvo_[VIN]_average_fuel_consumption')) }}"
      device_class: "volume"

    - name: "Lars - 2025 XC90 T8 Average Energy Consumption Miles"
      unique_id: "volvo_[VIN]_average_energy_consumption_miles"
      unit_of_measurement: "kWh/100mi"
      state: "{{ (states('sensor.volvo_[VIN]_average_energy_consumption') | float * 1.609344) | round(2) }}"
      availability: "{{ is_number(states('sensor.volvo_[VIN]_average_energy_consumption')) }}"
      device_class: "energy"

Is this a Volvo issue or an MQTT issue or a combination of the two? I suspect the actual measurements for these sensors are all done natively with metric values and then converted to US units. I just find it strange that most of the values are properly converted, but these 3 are still unchanged.