Hi. I have a question and need advice. I got a Discovery 5 HSE 3LV6 petrol(2017). When I drive from start up, there are terrible vibrations on the vehicle lasting abt 15min thn goes away. This occurs intermittently. Sent it to Landrover workshop 4 testing. No fault was found via diagnostics and Landrover is saying this is normal characteristic of the car. Has anyone else experienced these vibrations.