I suddenly experience a very weird sound when accelerating in 1st or 2nd gear. I don’t experience this sound whatsoever as soon as I’m in 3rd or higher. Only occurs while hitting the gas. Any ideas what this could be? I drive an Opel/Vauxhall/Buick Insignia/Regal CDTI (2010). Many thanks!
For the sound: Opel Insignia acceleration sound - YouTube