Car Maintenance for Home Assistant

Track vehicle maintenance with progress sensors: service inspections by time and/or driven distance, periodic vehicle inspection, highway vignette, oil, brakes, tires and any custom counter.

• One integration entry per vehicle, any number of counters per vehicle.
• Counters track a time interval, a distance interval, or both; progress is driven by whichever is more exhausted.
• Optional odometer entity; without it counters work by time only.
• Kilometers or miles, selectable per vehicle.
• Progress direction 0 -> 100 (default) or 100 -> 0, selectable per vehicle.
• A "done" button per counter resets it to today at the current odometer reading.
• Warning binary sensor per counter for automations (default threshold 90 %).
• Localized in en, cs, de, es, fr, it, nl, pl and pt-BR; entity names and counter templates follow the Home Assistant UI language.
• Bundled integration icon (shown by Home Assistant 2026.3 or newer).

Requires Home Assistant 2025.3 or newer.

Installation (HACS)

Car Maintenance is available in the HACS default store.

1. Open HACS in Home Assistant and search for "Car Maintenance".
2. Install it and restart Home Assistant.
3. Settings -> Devices and services -> Add integration -> Car Maintenance.

Or use this direct link:

Configuration

Create a vehicle (name, optional odometer entity, unit, progress direction), then add counters to it from the integration page. Templates prefill common intervals (service 1 year / 15000 km, vehicle inspection 2 years, vignette 1 year, ...); everything can be adjusted.

Each counter provides:

Entity	Meaning
sensor.<vehicle>_<counter>_progress	progress in %, capped 0-100
sensor.<vehicle>_<counter>_remaining_days	days until due (negative = overdue)
sensor.<vehicle>_<counter>_remaining_distance	distance until due
sensor.<vehicle>_<counter>_due_date	next due date
binary_sensor.<vehicle>_<counter>_warning	on at the warning threshold, overdue attribute
button.<vehicle>_<counter>_done	mark as done today

The progress sensor exposes exhausted_percent, remaining_percent, time_percent, km_percent, limiting_factor, last_service_date, last_service_odometer and due_odometer attributes (distances in km).

Dashboard

Horizontal progress bars work great with entity-progress-card (install via HACS):

type: custom:entity-progress-card
entity: sensor.toyota_service_inspection_progress
name: Service inspection
icon: mdi:car-wrench
bar_color: var(--state-icon-color)

Overview of all counters of a vehicle:

type: vertical-stack
cards:
  - type: custom:entity-progress-card
    entity: sensor.toyota_service_inspection_progress
    name: Service
  - type: custom:entity-progress-card
    entity: sensor.toyota_vehicle_inspection_progress
    name: Inspection
  - type: custom:entity-progress-card
    entity: sensor.toyota_highway_vignette_progress
    name: Vignette

Notification automation example:

triggers:
  - trigger: state
    entity_id: binary_sensor.toyota_service_inspection_warning
    to: "on"
actions:
  - action: notify.mobile_app_phone
    data:
      message: >-
        Service inspection due soon:
        {{ states('sensor.toyota_service_inspection_remaining_days') }} days
        or {{ states('sensor.toyota_service_inspection_remaining_distance') }} km left.

License

MIT