I test drove the 1.6 Diesel Grand C-Max, as it was the only one the dealer had available (I've ordered the 1.6 Petrol Ecoboost). I felt the 1.6 Diesel was a little sluggish when pulling away at roundabouts etc - I have no experience of the 2.0 Diesel C-Max, but I drive a 2.0 TDCi Kuga, and that's certainly a lot more responsive.
If you could stretch to the 2.0, I would but at the very least, ring around to see if you can try both out...
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