関連ワード:  does a v6 use more gas    does a v6 use more gas than a v8    does a v6 use more gas than a v4    does a v6 burn more gas    does a v6 use more fuel    does v6 use more gas than 4 cylinder    does a v6 use less gas than a v8    does v6 or v8 use more gas    do v6 use more gas    how much more gas does a v6 use compared to a v4