If electric turbos are a thing why cant exhaust gasses be used to generate electricity for the car?

Electric tur bos are a thing , but using exhaust g ases to generate electric ity for a car is not a common practice . There are a few reasons for this : \n \n 1 . E ffic iency : Gener ating electric ity from exhaust g ases is not an efficient way to power a car . The energy in the exhaust g ases is already being used to turn the whe els of the car , so using it to generate electric ity would be a waste of energy . \n 2 . Em issions : Using exhaust g ases to generate electric ity would also increase em issions , as the process would release additional poll ut ants into the air . \n 3 . Cost : Gener ating electric ity from exhaust g ases would require additional hardware and systems , which would add cost to the car . \n \n Inst ead , most electric cars use reg ener ative bra king to capture energy that would otherwise be lost during bra king and use it to charge the battery . This is a more efficient and cost - effect ive way to generate electric ity for the car . </s>