Hardly a fair comparison re the Kona not getting mileage advertised - we don't know if the question asker weighs 10st or 20st or if they carry a full boot of carp and a full petrol tank. Again, traffic at rush hour compared to traffic at 2AM will impact MPG as will hills on the route etc.

Do exactly the same test as advertised and it will no doubt do the mileage stated.

Depends on type of hybrid...My NX300H Regularly returns around the mid 40s mpg and that includes motorway driving..

The 'Real MPG' figure given on this website for the (current shape) NX300H says 37.8mpg average.........

Plus, you don't say how much motorway miles you are doing, which would make a big difference. The Kona owner (not sure why i was talking about the Niro in my last post, senior moment?, same car underneath though, so hey ho!) owner is doing 100miles per day on the motorway, which is a lot.

46mpg is just a little more than what i'd expect from a car like that with a n/a petrol under the bonnet, which suggests the hybrid system is not providing very much at all. So without a doubt, the chap has bought the wrong type of car for his useage. Can't see him getting any redress from the manufacturer over it though, any more than someone who buys a diesel for exclusively short stop start urban running then has expensive emissions equipment related problems.