http://www.autoexpress.co.uk/carreviews/firstdrives/205004/maserati_quattroporte.html
That poor gas mileage figure concerns me. 19.2 is not great. My Chevy work van gets better mileage than that, and my CL500 has been yielding 26-28 freeway! Hope to drive one on Monday and I'll feel it's abilities.
The fuel economy may not be great but it's right in line with the competition...the M5 gets 18mpg, XJR gets 24mpg and the S8 gets 21mpg.