Cov tsheb hluav taws xob (EVs) yog cov tsheb siv los ntawm lub zog hluav taws xob, siv lub tshuab hluav taws xob los tsav lub log, thiab ua tau raws li txhua txoj kev tsheb thiab kev nyab xeeb. Lawv siv hluav taws xob khaws cia hauv cov roj teeb kom lub zog ntawm lub tsheb. Qee zaum 12 lossis 24 roj teeb siv los tsav tsheb, thiab qee zaum xav tau ntau dua.
Cov tsheb hluav taws xob tsim tsis muaj pa paug xws li cov tsheb sib xyaw hauv lub cav, ua rau tsis muaj pa phem. Qhov no muaj txiaj ntsig zoo rau kev tiv thaiv ib puag ncig thiab huab cua huv, ua rau lawv zoo li "zero- pa phem." Nws paub zoo tias cov pa phem xws li CO, HC, NOx, cov teeb meem me me, thiab cov ntxhiab tsw hauv cov pa tawm ntawm cov tsheb sib xyaw ua ke ua rau cov kua qaub los nag, kua qaub pos, thiab photochemical smog. Cov tsheb hluav taws xob kuj tsim suab nrov tsawg dua li cov tshuab hluav taws xob sab hauv, thiab lub suab nrov ntawm lub tshuab hluav taws xob kuj tseem qis dua. Cov suab nrov tuaj yeem ua rau tib neeg hnov qab, lub paj hlwb, kab mob plawv, digestive system, endocrine system, thiab tiv thaiv kab mob.