Mazda6 2007 March: Car loses power for no apparent reason and with no warning. It may be a faulty egr valve. When failure happens the car will not accelerate. This has happened on narrow road and on motorway when overtaking. Both times other road users have had to take evasive action to avoid hitting my car as it slowed.

- Westcliff On Sea, 00, USA

Purchased brand new 07 Mazda 6with 41 miles on it on June 30, 2007. As of July 2, 2007 was returned to the dealership service dept with only 150 miles. Heard a rattle coming from the area of the converter, and also a high pitched spealing coming from the engine area when the vehicle was stopped and only in reverse and drive and when the vehicle gets hot. Service dept. Repaired some springs and a doughnut seal in exaust pipe going to the manifold. Picked car back up on July 5, 2007 with now 170 miles on it, drove home about 7 to 8 miles and heard the same rattling and high pitched squealing, only it was worse, also now the vehicle feels like it's sluggish, and noticed that while driving once again back to the service dept. That day, while on the highway driving 55 mph and trying to accel, the vehicle shifts from 5th down to 2nd and then tries to go back up, also redlines while trying to accel. July 6, 2007 called service dept. They told me it's the catalytic converter, I asked about the shifting problem, they told me they didn't feel the vehicle had a problem with the transmission. My vehicle now has 225 miles on it since I left it. The service dept. Is putting on more miles than I am, and I have a brand new car that I have only been able to drive 2 days out of 7.

- Racine, WI, USA