Joe 
2006 BMW 5 Series Sedan 530xi 4dr Sedan AWD (3.0L 6cyl 6M)
530xi
 The BMW 530xi:  Motor - Smooth throughout entire RPM range although it lack the ummphh you would expect. Handling - You'll back down before the car will - outstanding Interior - Quality throughout-seats can wear on you on a lengthy trip.  IDrive a snap for the computer literate generation, definitely not for you Mom. Lack of storage, center console useless.  Cup holders work better than you would expect. Exterior - Germans can't match the Japanese for fit and finish, gaps large enough to fit your pinky in.  Car is drop dead gorgeous but paint is very soft and scratches easily.  Run flats are a no no - no tire life and flats abound, stick with stock. 