Please check that the headrest is in the lowest position. Between shoulder of the child and the lower edge of the head restraint is no longer as 2 fingers should be high place.
Is an e-mail directly from Cybex support, because I had written it and was unsure.
Otherwise, the seat of super quality. What I also liked a lot, the two Plastikeinführhilfen for Isofix, that really protects the references from the car.
Is you safety at heart, I can really recommend you this seat. Clear the purchase price at the beginning is always a little high but you can also use the seat for several years.