The key sometimes works the first time for unlocking the doors, and sometimes it takes a few tries.
The electric windows are sometimes one touch, and sometimes the button needs to be held down in order to put the window down. Nothing is consistent. However, this isn't the reason why you purchase a car such as the M3, so they've been minor annoyances at best.
This car is a serious performer. The speed is deceiving. At 80 mph, it feels like most cars at 55 mph, which is surprising given the small size of the vehicle.
This car is incredibly quick. It takes about 10 seconds to get it to 115 mph which feels like about 65 mph in this car. You could seriously get hurt in this vehicle.
This car gets a lot of attention, both on the road and off. I ordered it in Phoenix Yellow, and have had people follow me down the expressway, into a gas station, and ask if they could take pictures of it. Be prepared to get a lot of attention if you purchase one of these!
0-115 mph in 10 seconds? Oh please! Unless it's highly modified it will hit 115 maybe in 15 sec. M3 is a great car, but hey, this is not a Viper!
Go to your local locksmith and purchase some graphite spray. If you spray a small amount of this into your outside key port via the included tube, it should near-instantly solve The lock issue. I've had this problem on 2 BMW's that I've owned.