Back of the envelop (literally)
Gasoline: 34.8 MJ/L
3.78 L/Gal
--> 131.544 MJ/gallon
My car has a 17.5 gallon tank.
Averaging 60 miles/hour, 350 miles trip, in 5.88 hours is almost exactly one tank.
131.544 MJ/gallon * 17.5 gallons == 2302.02 MJ of raw chemical energy in my car
2302.02 MJ in 5.88 hours is 391.5 MJ/hour is 108.750 kilowatts
My car consumes ~108 kilowatts. At 25% efficiency, it's generating ~27 kilowatts power.
Sanity: 27 kilowatts is 38.57 horsepower. That about makes sense.
3.78 L/Gal
--> 131.544 MJ/gallon
My car has a 17.5 gallon tank.
Averaging 60 miles/hour, 350 miles trip, in 5.88 hours is almost exactly one tank.
131.544 MJ/gallon * 17.5 gallons == 2302.02 MJ of raw chemical energy in my car
2302.02 MJ in 5.88 hours is 391.5 MJ/hour is 108.750 kilowatts
My car consumes ~108 kilowatts. At 25% efficiency, it's generating ~27 kilowatts power.
Sanity: 27 kilowatts is 38.57 horsepower. That about makes sense.