Hi, we bought a 2.0tdci titanium S-max in November to replace a VW Sharan tdi 110hp, we have'nt yet towed our lunar gemini 615 20' twin axle MIRO 1100kg MTPLM 1400kg but the Shaz pulled it fine, though a little under powered stability was excellent. MPV's are designed to be able to carry a heavy payload and travelling back from France with a family of four, all our ski gear and over 200 bottles of wine, the tail was a little lower than usual but not scraping the floor as many saloons and estates would. considering this we decided against the self levelling suspension on the S-Max.
The Shaz was quite chuckable through the corners for an MPV, The S-Max makes it look like a pig on ice!!! it's the first car I've had that put a smile on my face when driving since my BMW 530i, the first 7 seat gti. Some revievs suggest the rearmost seats are only suitable for kids but at 6'1 I found there was more headroom than the shaz but my knees were by my chin.
If you read the reviews on what car website the recurrent theme is nice car, shame about the dealers and this is true in our case, Ford Dealers are c**p