We bought a 2015 Corolla LE Plus this past Thanksgiving weekend. The tank went from full to ¾ full after 38 miles of city driving. The onboard MPG calculator said it was getting 16 MPG (it’s rated 29 city/38 highway. When we took it back to the dealer the sales consultant said that’s normal – that it would improve after it got “broken in”. The car mechanic who I have taken all my Toyotas to and who has only worked on Toyota for the last 30 years says plus or minus a couple MPGs would be reasonable but not minus 13 MPG. We drove it another 400 miles to “break it in” and during this breakin period it did get close to 38 MPG when we drove on the highway. Then I topped off the tank with gas, recorded the odometer mileage, zeroed out the onboard trip mileage recorder and the MPG calculator and my wife drove 61 city mileage. The onboard MPG calculator said it was getting 16.8 MPG and 61 miles divided by th3 3.854 that it took to top it off again = 15.8 MPG. Either way I don’t think the mileage should be this bad. Can anybody post new Corolla mileage you have experienced? - Thanks.