Mazda 6

This is the first car I have owned from new. I bought it in 2003 and since then it has given me almost no trouble at all.
There were a few niggling things wrong at first, for example the sun visor on one side was loose so it wouldn't stay in the correct position, and the sunglasses holder wouldn't stay closed, but these were sorted out under warranty and were minor issues.
The only serious problems I have encountered with the car were with the support struts for the hatchback, which do manage to hold the bootlid up but are very noisy and stiff, so it won't go up by itself. They were replaced under warranty but the problem came back and now the warranty is finished :(
There is a potentially dangerous problem with the rear seat belts which sometimes lock up for no reason and will not release unless you take it right back to the start position. This is very serious as the belt just gets tighter and tighter and you have to take it off to release it, which is obviously dangerous if you can't stop to do it.
I had the belt changed under warranty after arguing with the dealer that it was not supposed to do that. The new belt is slightly longer which is good for baby seats but the problem does still come back occasionally.
On the positive side, I think it's fair to say that there have been no other mechanical problems and no electrical problems at all. The car is excellent to drive and not too expensive - I get about 23.5 mpg average and I'm not a slow driver!
The boot is cavernous - just under 500 litres to the parcel shelf and more if you take it out. The seats fold flat at the pull of a single lever in the boot to provide even more space. I transported a whole 6x8ft shed in the back of the car (in pieces, obviously!) and even managed to close the boot!
The seats are comfortable and there's room for 3 baby seats in the back, should the need arise.
A lot of people complain that the road noise is excessive, but I've driven many cars that are far worse, and not many that are significantly better.
The car is nearly 5 years old and still feels like new, and looks great!
There are six airbags including curtain ones to protect from side impact.
I would definitely recommend this car - it has Japanese reliability and great looks as well as excellent handling, comfort and space.