Honda Civic 2012 model has an EPA rating of 28 mpg city and

Honda Civic 2012 model has an EPA rating of 28 mpg city and 39 mpg highway. What is the thermal efficiency of Honda Civic for city and highway respectively? Make any necessary assumptions for parameters such as HV of gasoline, speed, etc. The compression ratio of Civic is given as 10.6. Find the ideal Otto cycle efficiency and compare with the values of efficiency calculated from mpg rating. Comment on the results.

Solution

Data is insufficient. One can find otto cycle efficiency easily but it wont be easy to assume other parameters such as speed,rpm,torque.