There are those that say change is a necessary evil, but we've always wondered why change couldn't be considered a necessary good, instead.  After all, for many of us the best things to happen to us in our lives are so great because they're huge changes-getting married, buying a house, having kids.  Aren't those all undeniably good?

Also undeniably good are the changes we've made to the 2013 BMW 7 Series vehicles, most of which will make their way to dealerships later in the summer (the ActiveHybrid 7 will arrive in the fall).  These upgrades will alter the look of the car a little bit-adding a new grille, new front fascia, and an option for adaptive LED headlights-but the really excellent part of the updates comes under the hood, where all the 7 Series cars will experience some sort of improvements to their drivetrains.

The 740i and 740Li, for example, will get their direct-injection V6 engines upgraded so that they now get 315 horsepower, while the twin-turbo 4.4-liter V8 engine in the 750i and 750Li will get a serious upgrade, boosting that horsepower to 445.

Meanwhile, the ActiveHybrid 7 is the only one of the 7 Series models that actually loses some horsepower, but that's only because the loss of power means a significant uptick in fuel efficiency, something BMW Los Angeles drivers asked for out of the next-generation ActiveHybrid 7.

In all, these are changes that we here at Center BMW consider to overwhelmingly good.  They were also necessary, which is where we get "necessary good."  By no means are they in any way evil.