Because both need some extra styling work.
Believe it or not, this is actually the second time the next-generation Audi Q7 has been delayed. Previous reports indicated that Audi executives weren’t pleased with what the design studio was proposing, so it was back to the drawing boards. And now it appears, according to a report coming from AutoGuide, that the new Q7 has been pushed back yet again for the same reason. In fact, it’s not the only upcoming new Audi that’s been delayed due to unsatisfactory design proposals.
The next A4, which was originally scheduled to be revealed later this year, has also been pushed back to improve its exterior styling as well as additional suspension tuning work. Audi is supposedly eager to launch a plug-in hybrid version of the A4 when at first launch, so major work is now being directed at getting that technology ready. But back to the Q7. Word has come out that the original design was deemed to be too aggressive. Apparently, Audi’s new design chief along with the new head of R&D is now working on "taking out some of the aggressiveness." The reason why the new Q7 was given such aggressive lines in the first place was to cater more to the Russian market. No new launch dates were given for either.