<human>:  Can you help me compare gas mileage between two different cars?
<bot>: Sure, I can help you compare gas mileage between two different cars. First, you will need to know the make, model, and year of each car in order to find the relevant gas mileage information. You can then compare the two cars' mileage based on the current fuel efficiency ratings for each engine type. Additionally, if you're comparing two cars of the same year, make and model, you can also consider other factors like extra features or modifications to determine which car has the better gas mileage.