Isigidi se-motor sikhululiweyo iyisigidi esebenzisa imoto elekthriki ukuxhasa kanye nokubeka, ukwenza ukuba kube lula kanye nokuphepha. Imoto ingxile kumechanizimu wesigidi, ubekwa kwamandla elekthriki kuya kumoti yokuhamba ngokuzingca isigidi (kuvule) noma (kubeka). Le sigidi isetshenziswa kakhulu emathongweni, ezindaweni zokugcina nokwakhiwa, lapho kusebenzisa ngendlela yokuqala kungaba lula. Iinkcukacha eziphambene nayo i-quka ukusetshenziswa kwekhontroli yemoto, ekuvumela ukusebenza kusihlango, futhi amaswithi wokugcina aphaze ukuvula/kubeke kahle. Izinhlelo zokuphepha njenge-ukwethwa kwezinto ezingaxwayesi isigidi libeke phansi kwezinto, ake amaswithi we-overload ikhusele imoto. Zinezinhlobo ezahlukene nezinhlobo zomaterials, nezimoto ezilayishwe ngokulingana newe zenkosi yesigidi. Isigidithu sethu se-motor sezimelwe ngokuthembekile, nezimoto ezingadlayo kanye nezikhombisa ezingadlayo. Zifakwa ngezinhlobo zokufaka kanye nezinyathelo zokusebenzisa. Uma ufuna izimoto ezisha okanye ukufaka isigidi esisha, qhagama ithimba lethu lokuthengisa.