2009 Vauxhall Insignia

READ ADD!!!! READ ADD!!! Selling for a friend is hes 2009 Vauxhall insignia 2.0 litre diesel starts and drives but when driving there isnt enough power when foot is to the floor still drives aright no knocks or bangs has been cleaned inside and out has 160k on the clock has mot till March 2023 next year got full logbook 650 Ono