Ukuhlelwa kweenjini zemoto zinezi ntlobo zilandelayo:

1. Ngokohlobo lwamandla, iinjini zemoto zinokwahlulwa zibe ziinjini zedizili, iinjini zepetroli, iimotor zemoto zombane, kunye neehybrids.

2. Ngokohlelo lwenkqubo yokuthatha, inokwahlulwa ibe ziindidi ezine: i-aspirated ngokwendalo, i-turbocharged, i-mechanical supercharged kunye ne-dual supercharged.

3. Ngokwemowudi ye-piston yokuhamba, inokwahlulwa ibe yi-injini yokutsha yangaphakathi yepiston kunye ne-injini ye-rotary piston.4. Ngokohlobo lwelungiselelo le-cylinder, kukho ii-injini ze-in-line, ii-injini zohlobo lwe-V, ii-injini zohlobo lwe-W kunye neenjini ezichaswe ngokuthe tye.

5. Ngokwenani leesilinda, inokwahlulwa ibe yi-injini enye-cylinder kunye ne-multi-cylinder injini. Iimoto zanamhlanje ubukhulu becala zisebenzisa ii-injini ezine-cylinder, ezine-cylinder, ezintandathu kunye nezisibhozo.

6. Ngokweendlela ezahlukeneyo zokupholisa, inokwahlulwa ibe yinjini epholileyo yamanzi kunye ne-injini epholileyo yomoya.

7. Ngokwenani lemivimbo, inokwahlulwa ibe yi-injini yokutsha yangaphakathi ene-stroke kunye ne-two-stroke injini yokutsha yangaphakathi.

8. Ngokohlelo lwemowudi yokubonelela ngamafutha, i-injini ye-carburetor, injini ye-injection ye-electronic kunye ne-injini ye-injection ngokuthe ngqo kwi-cylinder.