[ Not controlled by.....Well, that would explain why you're new to this kind of thing. Haruka taps a fingernail on each gauge as she mentions it, leaning over Tear to do so (and thereby getting all up in her personal space. Again.)
Her voice is level, however, as if she were just chatting in a totally normal position. ]
This one's the biggie. It tells you how fast you're going. Though you can't ignore this either, it's the fuel. [ She chuckles, indicating the literally smaller of the two. ] You're going nowhere fast if that hits empty.