This.
That chart is utter b*llocks. Repair costs and labour costs will of course be higher, they're premium makes for a reason! And as for the 'Time off the road' scale, I've never seen such utter gumpf in all my life. I have NEVER taken a car in and left it there for less than a day unless it's for an MOT, and although they'd have worked that out I'm guessing by dividing total ownership length with total time spent off the road, that's still massively misleading. £180 p/h for labour is a joke as well, you'd never be paying that, much like you'd never pay £150 p/h for a Honda.
Buy a decent car, don't just buy the make. For all we know, more BMW and Jag owners are likely to kick up a fuss and complain, hence the skewed stats. Could well be true actually, as Civics are normally owned by old people bored of life who "don't want to bother any one, dearie". If you want an XE, then get an XE!
Stupid chart is stupid.