poor fuel consuption

It is obvious that towing a caravan can affect your miles per gallon by quite a bit, but I'm just wondering to what extent it is affected. Does the type of going vehicle you have also have a role to play in this, or is it simply down to the weight of your caravan?

Hi everyone i’m after some advice on my kia sorento .. when i drive straight no problems .. when negotiating bends i can feel a vibration of sorts through the steering wheel but when i look at the steering wheel it’s perfectly still .. all tyres are same make and tread.. the fuel consumption is...