---
title: IntentParameter.FuelEfficiency
framework: appintents
role: symbol
role_heading: Enumeration
path: appintents/intentparameter/fuelefficiency
---

# IntentParameter.FuelEfficiency

## Declaration

```swift
enum FuelEfficiency
```

## Topics

### Enumeration Cases

- [IntentParameter.FuelEfficiency.litersPer100Kilometers](appintents/intentparameter/fuelefficiency/litersper100kilometers.md)
- [IntentParameter.FuelEfficiency.milesPerGallon](appintents/intentparameter/fuelefficiency/milespergallon.md)
- [IntentParameter.FuelEfficiency.milesPerImperialGallon](appintents/intentparameter/fuelefficiency/milesperimperialgallon.md)

## Relationships

### Conforms To

- [CaseIterable](swift/caseiterable.md)
- [Copyable](swift/copyable.md)
- [Equatable](swift/equatable.md)
- [Escapable](swift/escapable.md)
- [Hashable](swift/hashable.md)

## See Also

### Accessing unit details

- [unit](appintents/intentparameter/unit-3ek73.md)
- [defaultUnit](appintents/intentparameter/defaultunit-2u2qw.md)
- [supportsNegativeNumbers](appintents/intentparameter/supportsnegativenumbers-6wblf.md)
- [unitAdjustForLocale](appintents/intentparameter/unitadjustforlocale-322mt.md)