The full quote in dirty imperial units:
I live my life a quarter mile at a time. Nothing else matters: not the mortgage, not the store, not my team and all their bullshit. For those ten seconds or less, I’m free.
– The Fast and the Furious
How was this translated to metric?
I’m not aware of a specific idiom that conveys that meaning in my language. We’d say ‘it’s economical/thrifty’ but there’s no car related idiom. A combined word like ‘kilometerrendement’ might be conjured up, but isn’t in common use.
As sayings go, they predate the petrol engine like : ‘that’ll keep the stove burning for a while’ or ‘sailing with the wind’