In summary, there is a good-quality, easy-to-use support, with three or four bikes (with adapter, see my review there) are safe to transport, but with some weaknesses and overall too high a price:
o bikes may well knock together or against the rear window, especially with bumps or other irregularities in the road that lead to the swaying of the vehicle and carriers. Wheels need to be very carefully fitted and possibly additionally secured (straps) are best cross the tiller the first wheel
o distances between wheels partly too low, frames should be additionally protected (in particular between the third and fourth wheel on adapter)
o risk to lock the carrier with too little pressure on the clutch, no feedback / fuse indicator such as the Atera Sport, but overall good & easy to handle mounting
o Felgenband ratchets probably go quickly broken (one in our second trip), see also reviews other buyers
o securing the frame, where the bicycle rack will be mounted, and had to be pulled from to
o mounting struts are ideal for bikes with conventional frame, possibly difficult for defaulted geometries
o The tailgate of our caddies can just open at 70 degrees tilt-angle, even berüht the fourth wheel is not the floor (did not work at Atera Sport M 3 + adapter)
o Unfortunately, it is the practical, smooth foot lever, which allows you to fold the carrier, do not back up what could be dangerous depending on the situation
o support upgradeable to four wheels with adapter, but falls somewhat relative to the carrier in terms of quality (see review here)
o Electrical / light etc. worked flawlessly without any abnormalities
o My wife found the carrier a bit too heavy and too bulky to him to mount alone (the Atera was noticeably lighter), also because it "climb in" in the framework can not, in order to align the carrier on the coupling and at the same time to use locking (seems to be easier when Uebler)
o Long-term durability:'m excited because the support exactly where most forces is probably welded fix (on the coupling), the carrier (but am not an engineer .. ;-)