Its only flaw is its ridiculous autonomy inherent in this kind of gear, but it's so easy to take it out and put it in charge we pass on from there needs without leaving time to dust to accumulate: suction power cleans what needs to be done in less time than it takes to write it, and autonomy is not a concern in regular use . Certainly if you let dust build up in the car, you will need maybe two sessions the first time, but eventually you will clean the five minutes.
Its price may seem a little high, but it is an investment that we did. No need to spend three times in the same place as with a 30 euros handheld vacuum will lose suction power past the first 10 seconds, then effectively cleaned, and if like me you are not passionate household while wanting to keep things clean, it's worth the extra cost.
Last point is the Black & Decker is well thought out, well built and we know that it will not let you go after three uses.