[問題] 表速與實際速度問題
最近都是用手機的GPS app '安心開' 在測車子實際速度
結果表速和手機gps速度差距
是表速僅約慢3公里
車子是2017年式的馬3 尊榮版,
手機是htc 816
一般要怎麼才知道自己車子的表速
和實際速度的差距是多少呢 ?
目前測得才慢3公里,不確定準確性如何
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