This is not a double post, AutoExpress reviewed the CL as well, but they did it better, they got themselves the CL600. While there isn’t much difference between the two (550 vs. 600) in the interior or exterior, the engines are certainly different; the 550 has a V8 and the 600 has enormous V12. Similar to the Edmunds review, the guys over at AutoExpress had positive things about the CL, and especially this quote shows it.
There is no doubt this Mercedes is enormously expensive – but it’s one of the most capable cars on the planet.