AirMatic Specifications, Considering a ML350 and need some advice

I have returned to the Mercedes world with the purchase two weeks ago of a MY15 C400. Now I am looking at switching my wife from the MDX to the ML350BT. In the consideration though I have a couple of things to resolve.
There is a slightly used ML14 ML350 with 8k of miles on it that is about $13k Canadian less than buying brand new. Within there are a couple of options that I have questions about and in this post I am addressing the AirMatic suspension.
The truc I has the AirMatic suspension which I think is the only way to get the ML based on test drives. It does lead to a couple of questions though.
1. Is there any reliability questions that I should consider with AirMatic or are all the bugs worked out after all the years of its development?
2. This question is related to capability of AirMatic given my garage situation. Specifically, I have a garage door that is only a 7' opening height and I put a ski box on the roof of the current MDX which fits into the garage. This is important because when we had our MY02 ML500 my wife drove into the garage with the box on the roof, the two together measured higher than the garage opening so you can guess how that went (yes I had reminded her not to drive into the garage). So, for the question, can the truck be told to lower itself with the AirMatic and get a lower total height, and if so what would the lower height equate to?

Might need to look for a different carrier box.
These are an option if you don't mind it being lower all the time.
These are an option if you don't mind it being lower all the time.
I'm pleased at some of the aftermarket stuff available for the ML. Now if only I could get a reasonably priced Nav update.

These are an option if you don't mind it being lower all the time.
Do wonder why you could not just handle it like a chipping of the motor is done, but I suppose that is because of the ride being in some other area of software that could be overwritten through regular servicing.
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RT, also just noticed that you are also in Calgary.
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Histrionic would be great, but not a must like the AirMatic is. Having driven both with and without I found the non-AirMatic was not as good handling and ride wise as the 2008 MDX we currently have for an SUV. The AirMatic was much more enjoyable.
We are in Bearspaw just outside the city limits in the North West.
No - I don't believe there is any difference in vehicle height between the two modes when parked. I believe the sport mode lowers the suspension by a fraction of an inch (0.6"?) vs the comfort setting , and firms it up. You also can increase the ride height, but there is no manually selected lower setting like some other air suspension vehicles.[/QUOTE
Incorrect. If you drive in sport and park it stays low. A little less than an inch lowering. If you drive into garage with comfort of stays higher when off. The height doesn't vary with parking like range rovers. Air matic is not standard we had an ml350 2012 springs and 2014 ml550 with airmatic which is vastly superior. From a comfort and sporty perspective. You get 2 different cars in one
It doesn't drop much, but there is no warning when it goes down.




