That sounds about right for a V6 Mondeo.
I tend to average about 25mpg, with 20-22 from spirited driving, and 30 or so on longer trips at cruising speed.
You say his last car was "also" a 2.0 Mondeo.... but there is no way his current one can be a 2.0 Mondeo, it will be 2.5 or more likely in the newer models a 3.0.
The V6 is quite a lot thirstier than the 2.0, and that's the change I've made and I'd say I'm using about 30 to 40% more fuel.