Tunda tsarin motoci ya fi rikitarwa fiye da na kayayyakin injina na yau da kullun, tsarin haɗawa da walda yana da wahala, kuma yawan samarwa yana da yawa, musamman kera jikin mota koyaushe masana'antu ne da ke da aikace-aikacen fasaha mai zurfi. Mabuɗin shine galibi ta hanyar manyan robots da kalkuleta na walda. Layin samar da walda na jiki wanda ya ƙunshi ci gaba.kayan aikin walda ta atomatik.   Yawancin jikin motar ya ƙunshi sassan ƙarfe da sassan rufewa, da kuma sassa daban-daban na tsarin da aka riga aka tsara, kamar ginshiƙan gilashin mota, ginshiƙan ƙofa, layukan sama na ƙofa, shingen gaba da na baya, bangarorin gaba da na baya, murfin sama, da sauransu. Ana haɗa sassan ta hanyar walda da riveting, kuma walda mataki ne mai mahimmanci a cikin layin haɗa motoci.   A cikin 'yan shekarun nan, manyan kamfanonin kera motoci na cikin gida sun fara amfani da tsarinrobot ɗin waldaLayukan walda na jiki, kuma da yawa daga cikinsu sun nuna ƙarfin fasaha mafi girma a duniya. Daga cikin waɗannan robot, robot ɗin walda na tabo suna da babban kaso. Misali, za a sami robots sama da 60 na walda masu tabo waɗanda ke aiki akan Jetta A2 haɗin jiki-cikin fari da layin samar da walda ta atomatik a cikinwurin aikin waldaKamfanin FAW-Volkswagen Automobile Co., Ltd.   A cikin 'yan shekarun nan, fasahar walda ta laser ta maye gurbin fasahar walda tabo mai juriya a hankali, wacce za ta iya biyan buƙatun da suka dace wajen sarrafa sassan mota. Ta amfani da wannan sabuwar fasaha, faɗin saman haɗin gwiwa tsakanin haɗin kayan aiki zai iya raguwa, wanda ba wai kawai yana rage buƙatar faranti ba. Hakanan yana ƙara tauri na jiki. Sassan walda ta laser, babu wani nakasa a cikin sassan walda na sassan, saurin walda yana da sauri, kuma babu buƙatar maganin zafi bayan walda. Walda ta laser tana da kyakkyawan damar dangane da ingancin aiki, tattalin arziki, aminci, ƙarfi, da juriyar tsatsa. Kuma wannan sabuwar fasaha ta zama babban kayan aikin injiniya a masana'antar masana'antu.