Not an upgrade from the X5....

Let's see, SAV..Sedan....V8 or V10....auto or SMG....

Not a whole lot in common between the two vehicles. If you like the M5 go for it, just make sure you have pennies saved for another vehicle when road conditions are bad...as I'm sure you don't want a 500hp/rwd vehicle in snow or rain storms. Odd part with the M5 is it has HUGE horsepower and barely any torque for the number of cylinders in the engine compared to the 4.8 motor.

I'd rather have a 650 then the M5 IMO.

HP/TQ numbers:
4.8 X5 - 355/369
5.0 M5 - 500/383

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