"fuel economy" meaning in English

{
  "forms": [
    {
      "form": "fuel economies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "fuel economy (countable and uncountable, plural fuel economies)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Automotive",
          "orig": "en:Automotive",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Petroleum",
          "orig": "en:Petroleum",
          "parents": [
            "Fossil fuels",
            "Liquids",
            "Carbon",
            "Energy",
            "Natural resources",
            "Matter",
            "Carbon group elements",
            "Nature",
            "Chemistry",
            "Chemical elements",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Transport",
          "orig": "en:Transport",
          "parents": [
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A measure of the amount of fuel consumed in a car or other vehicle based on the distance traveled."
      ],
      "id": "en-fuel_economy-en-noun-0-xIZFys",
      "links": [
        [
          "amount",
          "amount"
        ],
        [
          "fuel",
          "fuel"
        ],
        [
          "car",
          "car"
        ],
        [
          "vehicle",
          "vehicle"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "wikipedia": [
        "fuel economy"
      ]
    }
  ],
  "word": "fuel economy"
}

{
  "forms": [
    {
      "form": "fuel economies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "fuel economy (countable and uncountable, plural fuel economies)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns",
        "en:Automotive",
        "en:Petroleum",
        "en:Transport"
      ],
      "glosses": [
        "A measure of the amount of fuel consumed in a car or other vehicle based on the distance traveled."
      ],
      "links": [
        [
          "amount",
          "amount"
        ],
        [
          "fuel",
          "fuel"
        ],
        [
          "car",
          "car"
        ],
        [
          "vehicle",
          "vehicle"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "wikipedia": [
        "fuel economy"
      ]
    }
  ],
  "word": "fuel economy"
}