noun
odometer
A device that measures the distance traveled by a vehicle. The loanword オドメーター is also common.
See also: オドメーター
中古車を買うときは、走行距離計の数字を必ず確認してください。
When buying a used car, always check the reading on the odometer.
オドメーター is the common loanword for 'odometer', while 走行距離計 is the native Japanese compound with the same meaning.
Compound of 走行 (sōkō, 'traveling') + 距離 (kyori, 'distance') + 計 (kei, 'meter').