Ranger (new model 23) noise at 20 km/h

Hello dear community, it just doesn’t rip off. We only have our ranger (new model 23) a few weeks and again a problem: from 20 km/h to 30 km/h occur in the first and second gear during the ride, independently of the speed, probably in the front area. It is quite clear to hear, however, when you are between 20-30 km/h “off the gas”. It is very difficult to describe. Not laugh, but it sounds as if you are driving in a storm and the wind is blowing into the wheel box or underfloor protection. But it is a mechanical noise. The polter occurs only when the gears are inserted during the ride. As soon as you step in the clutch, it is gone. Strangely, it is only in the first and second gear in the speed range 20-30 km/h. The vehicle is nail new, already came out of the factory with a bent anchor plate (closed during the ride), totally unequal gap measurements and various qualitat faults. Is not yet 500 km from the speed range:(don’t we want to introduce it to two gears.) In the company of the company of Emily.