A cikin farashin amfani da mota, kulawa da gyara ya kamata su mamaye kaso mai tsoka. An raba kulawar yau da kullun na samfuran gabaɗaya zuwa kulawar kilomita 5,000 da kulawar kilomita 10,000. Kudin waɗannan gyare-gyare guda biyu ba su da yawa. Babban abin burgewa shine kulawar kilomita 60,000, saboda bel na lokaci da na'urorin haɗi suna buƙatar maye gurbinsu. Kudin kulawa a wannan lokacin zai fi RMB 1,000, don haka akwai hanyar da za a adana wannan kuɗin? Tabbas, shine zaɓi samfurin sanye take da sarkar lokaci.

Yayin da bel ɗin lokaci zai zama sako-sako bayan an yi amfani da shi na dogon lokaci, yana buƙatar canza shi kowane kilomita 60,000 don tabbatar da amfani da shi lafiya.

Kuma idan tsarin lokacin injin ɗin ya kasance ne ta hanyar sarkar ƙarfe, kusan babu damuwa game da lalacewa da tsufa. Gabaɗaya, gyare-gyare masu sauƙi da gyare-gyare kawai ake buƙata don cimma rayuwa iri ɗaya da injin.

Bayan gwajin abin hawa na ainihi, an gano cewa hayaniyar samfurin sanye take da sarkar lokaci ta ɗan ƙara ƙara. A bayyane yake cewa hayaniyar ta fito ne daga injin. Lallai wannan abu ne mai ban haushi, amma gabaɗaya, fa'idodin yin amfani da injin sarkar lokaci sun fi rashin lahani.