Yes its a company car and I have the option to buy at the end. I won't as I'd have done well over 100k miles during the lease period.
I had a 1.6 petrol Juke before the Scenic and got 45 mpg in that but I rarely took it over 2k revs on the motorway which it sat at 63 mph.
Like you said, as petrol is cheaper ill most likely spend roughly the same on fuel but get more back from the company in business fuel payments. (Petrol is currently £1.14 by me!!)
As well as the cheaper rate company car tax this can only be a good thing each month.
Looking forward to getting it now.