Well I'm afraid (hmm, maybe not) that I'm out of here.
Each to their own, but the C350e did just not suit my driving style. Possibly the final straw was that at the first sign of cooler weather (not even cold yet) my electric only range dropped to around 7miles, at least 7 months ago when it was properly cold I was getting 10miles.
However, that certainly wasn't the main reason. My driving tends to be pretty much ahem, at the speed limit, if I come up behind someone dawdling, then I want to pass asap. Most of the time I'm therefore happy in Comfort and hope to improve the economy doing so, however to safely pass someone I want to be in Sport/Sport+ so am left fumbling by my passengers knee, oh and when I do so the car nicely advertises the fact on the display. Overtake complete, back to more fumbling. Sure, I could just leave it in Sport all the time which mostly makes a mockery of having a battery aside the overtakes, it just becomes a very heavy thirsty petrol car. I found the car was making me drive in a way to suit it, that's not what I wanted - albeit a bit of fun at first.
Again, maybe it doesn't suit my driving style, but the ride while nice and smooth, even in sport mode the suspension is very soft if you try and push the car around some corners with a bit of speed, more encouraging it than telling it where to go.
Anyway, I'm now off to the BMW forum driving a 330d GT. That p/ex was a novelty which I suspect not many can say. I p/ex'd an 19month old C350e with 13k miles which cost around £40k new for a 13 month old 330d GT with 11k miles costing £42k new and they GAVE ME over £1k! (Yep the depreciation on the GTs is that bad for the first year - a very marmite car - I love the looks, but I know not all do). I drove home having collected the car over 100 miles (mixture of motorway and A roads), that thing is a real hoot! Put your foot down and it shifts, goes around corners like it's on rails, the stupid run flats make it a bit harsh on some road surfaces (they'll doubtless get changed in due course), but even with M-Sport the ride is surprisngly compliant, not all crashes and bangs.
Good luck with the batteries, you can have a laugh at me as I have park my car outside of town as you smugly drive in (although I am EU6 without AdBlue so ok for now).
Not everyone is the same, and thank heavens for that, but it wasn't for me.
Jeddy