Absolutely nothing to date.
I've had this car a little over 2 months, and in that time, I've covered over 4,100 miles. I really like it.
It is finished in stormy blue metallic; extras fitted include chrome door mirror housings, rear wing spoiler, front Sport grille and MPS-style gear knob. It also has a great looking set of 17" alloy wheels.
The interior is well made, no rattles or squeaks, although some of the plastics do feel a bit on the cheap side and the door-mounted speakers cause vibration in the door card (depends on how much bass you like...). Having said that, it's unobtrusive and the sound from the stock stereo is excellent.
Performance is impressive; doesn't feel, or sound, like a diesel. In fact, it's easy to forget you're in a diesel powered car until you glance at the fuel gauge and struggle to remember the last time you stopped to fill up!
It's also a good looking car which has that Lexus look about it.
I have the same one, 2.2 163 TS2 and agree with most of your comments.. however, having just given back a Mondeo 2.0 TDCI Zetec, sadly prefer it.. just had the edge over the 6 in terms of comfort, build quality & overall package. Seats on the Mazda not quite as comfortable, although the Audio is way better!
Stunning looking car, spacious, well built, quick and agile.. but the reflections in price difference are very evident.
The 6 is a super car & very happy with it overall.. just sort of 9 out of 10, which is a little frustrating!!