▁its ▁low - end ▁Om ni / Hor izon . ▁They ▁can ▁range ▁from ▁basic ▁to ▁complex . ▁The ▁most ▁basic ▁trip ▁computers ▁incorpor ate ▁average ▁fuel ▁mile age ▁and ▁perhaps ▁an ▁outside ▁temperature ▁display . ▁Mid - range ▁versions ▁often ▁include ▁information ▁on ▁fuel , ▁speed , ▁distance , ▁cardinal ▁heading ▁( comp ass ), ▁and ▁el apsed ▁time . ▁The ▁most ▁advanced ▁trip ▁computers ▁are ▁reserved ▁for ▁high - end ▁cars ▁and ▁often ▁display ▁average ▁calculations ▁for ▁two ▁drivers , ▁a ▁stop ▁watch , ▁t ire - press ure ▁information , ▁over - speed ▁warnings , ▁and ▁many ▁other ▁features . ▁ ▁Sometimes ▁the ▁trip ▁computer ' s ▁display ▁is ▁in ▁the ▁gauge ▁cluster , ▁the ▁dash board ▁or ▁navigation - system ▁screen , ▁or ▁an ▁overhead ▁console . ▁Some ▁displays ▁include ▁information ▁about ▁scheduled ▁maintenance . ▁The ▁current ▁Ac ura ▁T L ▁does ▁this ▁in ▁stages , ▁first ▁alert ing ▁the ▁driver ▁with ▁a ▁" D ue ▁So on " ▁message ; ▁once ▁the ▁program med ▁mile age ▁is ▁reached , ▁the ▁message ▁is ▁" D ue ▁Now "; ▁when ▁more ▁time ▁or ▁distance ▁has ▁el apsed , ▁the ▁message ▁changes ▁to ▁" P ast ▁Due ". ▁Mer cedes - B enz ▁vehicles ▁constantly ▁monitor ▁the ▁quality ▁of ▁the ▁oil ▁and ▁alert ▁the ▁driver ▁when ▁the ▁oil ▁has ▁de grad ed ▁to ▁a ▁certain ▁extent . ▁G M ▁and ▁F CA ▁vehicles ▁provide ▁oil ▁change ▁alert s ▁based ▁on ▁the ▁number ▁and ▁length ▁of ▁tri ps , ▁engine ▁temperature ,