Nothing.
How can this car NOT be reliable? With the push of a button someone from Mercedes will come and help you out.
And talk about comfort, these back power seats are wonderful. And the 18 inch AMG wheels are great.
Another feature I liked was the navigation system, wonderful.
Finally someone who can use the COMMAND system. My dad owns an S55 AMG and I have to work it for him if he needs it! And I'm only 15! I just wish he had got a CL instead!
The COMAND system is a nightmare. How anyone can claim it's usable is beyond me. That said, wait for BMW's new iDrive system to go mainstream. It's ergonomically dire, and makes the Benz equivalent look like a clockwork toy...
Why buy 600. It guzzles gas. V 12.
The V-12 doesn't matter, it has a cylinder shut off system, so you only use all 12 cylinders when needed.
If you have the money to buy one of these machines then I don't think even UK petrol prices are that much of a concern.
Bull.
Get real and stop dreaming people.