Hello, I hope I can be of assistance.
The best way to drive for economy is to leave the transmission in Automatic. The main reason for the "tiptronic" is for more aggressive driving, this is to improve the driving experience and feel.
Obviously if you feel that the economy is not as you would expect then you can try the car in "manual" to see if you can improve the economy. This transmission as with your previous automatic will adapt to your driving style so it may take around a thousand miles to get a true refection of the economy. If you drive the car economically you will find that the gearchanges will be at lower speeds than if you constantly drive the car aggressively where the transmission will adapt to stay in gears longer up to higher engine speeds.
I hope this answers your question but if I can assist further let me know and I'll reply as soon as I'm able to.
Hello again, sorry for the misunderstanding I thought you meant your old Mondeo was a standard automatic.
In the example you've given I would still use cruise control, at 60 MPH I would expect the automatic to have selected 6th gear. You may find that if you use the transmission as a manual and select 5th gear the engine speed will be different to your old car due to different gear ratios and different engines.
The more you cruise in the car the better the fuel consumption will be, I personally would use the car as an automatic especially when cruising, this should give better fuel consumption and be more comfortable. The newer 2.0L engine should be better on fuel than the old 2.2L but performance should be very similar.
I hope this has clarified things for you but let me know if I can assist further.