Hi my car is a cx5 20ltr sel plus 2018 19000 miles 42mpg (uk) my previous car was a 20ltr sport 2016 56000 miles 48mpg and gutless the sel is more responsive running smoothly clean exhaust etc on a run (100miles plus motorway) it will manage 44mpg but the sport over 50mpg also the range shows less when topped up to the brim 375miles the sport showed 455miles any ideas?

 

welcome to thje forum

you can't accurately compare the 2 without looking at both vehicle and all the specifications . plain and simple.

 

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rethought huh? I am sure you will post it again!
Let me post a simple single item, between two vehicles even the same year model and running gear, if the tires are different, the wear, the wear pattern, the PSI, the condition of the suspension, tire rotations, etc., etc., etc., yup just tires can make a difference when trying to be comparing vehicles for MPG.

 

Aside from the obvious mechanical/equipment differences already mentioned a host of other things needs to be known as well.
To get a valid comparison you need the exact same road and travel direction plus the same weather, wind and temperature conditions.
Combined vehicle and cargo weight and exact speeds must also be achieved.
Basically, nothing most folks are going to do and not something you likely did.
Meaning any MPG comparison without those factors is meaningless.