Ssangyong Rexton Leaks & Noises Problems

Can smell diesel when the air blowers are on or engine is running for a long time spoke to showroom and they said it should go away after a while I've only done 3200 miles got the car last November 21

My temperature gauge drops to zero everytime after I have been driving for a while Vibration on the front between 100 and 120 wheels have been balances several times and is right but vibration is still there Rough noise on gearbox when the...