This is totally anecdotal, but relevant. I installed the automatic.com car monitoring app/dongle to see how my last car (2013 ford escape ecoboost 2.0L) was per

This is totally anecdotal, but relevant. I installed the automatic.com car monitoring app/dongle to see how my last car (2013 ford escape ecoboost 2.0L) was performing vs the advertised rates. I drove consistently at a 95-97 score rating for efficiency, and never averaged over 16mpg despite the car being advertised as 23mpg city. Highway driving was different (i got 29.5mpg vs 31mpg advertised). I questioned ford about this and they blamed my city driving on "short trips where the car didn't heat up enough to be efficient". Either way, I was not pleased. My current car (Lexus NX200T 2015) gets 21mpg city 29 hwy within 1-2mpg of what was advertised. My driving patterns haven't changed.