<feature_model name="Monitor_Engine_System">
<feature_tree>
:r monitor_engine_system
	:m engine_performance
		:m temperatures
			:o colant
			:m oil
			:m engine
			:m transmission
		:m rpm (rpm)
		:m exhaust_level_temp
	:m fuel_consumption
		:m measures
			:g [1,1]
				: l_km
				: gallon_mile
		:m methods
			:g [1,*]
				: distance
				: type_of_driving
				: drive (drive)
</feature_tree>
<constraints>
c1: (~drive) or rpm
</constraints>
</feature_model>
