I'm just echoing Badgerman's post above...
It is quite thirsty, but compared to my previous car (Skoda Octavia VRs - ~26mpg) it's an improvement!
On a recent 3 hour run at an avergage of 50mph, I've managed to get an indicated 53mpg. On a normal 20 mile commute I'll get between 36 and 45 - very variable depending on the weather, and how hard I drive it.
I don't have the confidence I did in the Skoda for quick overtakes and so on, but it's much more refined and I'm getting used to a "slower pace of life". It's my first diesel, and when the turbo spins up, there's an immediate surge of power, it doesn't roar but you can feel it just pulling and pulling. I may still get it remapped though.
The MMI / Sat nav / console whatever it's called is a bit of a letdown. It would have been nice to have a touchscreen instead of all of these buttons (and there are loads of them!) and a big dial in the middle. If I want to enter a destination in the Satnav, I start by entering the postcode using the jogging dial (really not very intuitive). Partway through, it thinks it's more clever, removes any further postcode entry function and instead gives me a list of streets. It's pretty annoying and I often have to revert to using my phone for more accurate navigation.
The handsfree bluetooth is great. Pressing the voice search button on the steering wheel and saying "Call so and so" from my contacts list works like a charm, and the call quality is great. I don't need to raise my voice thanks to the microphone(s) in in the roof, and the receiver can hear me clearly, no need to repeat myself.
The cruise control is fanatastic - although it didn't frighten the life out of me the first time it slammed on the brakes automatically after I'd put my foot down. If you set it at a certain speed, it will try and keep at the speed, feathering the brakes for you if you start going downhill etc, or slamming the breaks on for you if you've inadvertantly left it set, and then floored it!
I'm still not a huge fan of the automatic handbrake and I've found myself at traffic lights, having to jump through hoops just to get going again!
And yes, it's a big car (I've already managed to scratch the woder than normal wheel arches 😪 )
I'm still happy with it after 7000 miles, and I'm planning a roadtrip over to Spain next year - I wouldn't have even considered it with any of my previous cars, but this is a very comfrotable, smooth, and "relatively" inexpensive car to run on a long journey.