I was actually looking for a 540i, but when I found this car with 50k original miles, perfectly maintained, I couldn't say no. Since then its been no looking back. Good highway MPG-28-30 if careful. Comfortable but somewhat stiff ride. But enough of the boring stuff, it RIPS. If you're considering this car, I recommend it. Find one that wasn't beat. Brakes, tires, parts are expensive, but they are well made. I've put 25k miles on it, and they were not easy miles. Some don't, but I love luxury package.
Perfect balance of handling and power. Really big sunroof. Good throttle response. Nice low-end torque. Great interior. Small things are thought of, like toolkit in trunk. Exactly what I wanted out of a car.
Few more ponies wouldn't hurt. Could use a nicer stock exhaust. You will always want to push it. Be careful on wet surfaces, even with stability.