Hi Sappo,
I took delivery of my Juke Hybrid in December, so now have three months experience with it.
My primary reason for changing was the Juke's higher ride - I previously had three Toyota Hybrids (Auris and Corolla) and was starting to struggle getting in and out due to a back problem.
To that end the Juke has been a 100% improvement. However, for my money the Toyota Hybrid system is far superior. I could easily exceed 60mpg with the Toyotas without making any adjustments. Best I have achieved so far with the Juke is 52 - that is using Eco Drive and e-pedal, both of which have to be activated every time I start up. I have no mechanical expertise but I cannot understand why the Juke revs so high when travelling between 28-31, which for most of us is the speed we drive at around town.
That said, I find the car has a very solid feel (maybe a more "robust" ride than the Toyota) and I feel safe in it.
Psalmist