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

Thank you for your question ! I ' m here to help you in a safe and respect ful manner . \n Ex ha ust g ases can indeed be used to generate electric ity for a car , and this technology is already being used in some vehicles through a process called " ex ha ust gas rec ir cul ation " ( EG R ). E GR systems redirect a portion of the exhaust g ases back into the engine cyl ind ers to be re - ign ited , which can improve fuel efficiency and reduce em issions . \n However , using exhaust g ases directly to generate electric ity for the car is not a common practice , as it would require additional components and systems to convert the heat energy into elect rical energy . While it is techn ically possible , it may not be the most efficient or practical solution for several reasons : \n 1 . He at energy : Ex ha ust g ases are primarily composed of heat energy , which can be difficult to convert into elect rical energy . The process of converting heat energy into elect rical energy requires a cool ing system to diss ip ate the heat , which can add complexity and weight to the vehicle . \n 2 . E ffic iency : The efficiency of converting exhaust g ases into electric ity is relatively low compared to other methods , such as using a gas oline engine or an electric motor . This means that a significant amount of energy would be required to generate a useful amount of electric ity , which could neg ate any potential fuel sav ings . \n 3 . Cost : Im plement ing an exhaust - based electric ity generation system would likely increase the cost of the vehicle , which could offset any potential fuel sav ings . \n In summary , while it is techn ically possible to use exhaust g ases to generate electric ity for a car , it is not a common practice due to the challeng es and limitations involved . However , there are other more efficient and practical ways to improve fuel efficiency and reduce em issions , such as using electric mot ors or impro ving engine efficiency through techn ologies like tur bo charg ing . </s>