I'm running a 2001 7 series bmw, it's quite agile for something weighing over 4000lb and almost silent at 120mph it's one of the few european cars you can fit 3x child seats in.
getting 21mpg even when driving like I'm on fire and managed 36mpg over a 200 mile motorway run.
amazing value cars once they have high miles, considering it was £60k new it was stupidly cheap 2nd hand and this one's still going strong @250k miles