On the way home from work my Glanza made a weird noise that I can't quite describe. The car seems very juddery at times, as if it's going to stall. Also the turbo seems non-existent now and only briefly appears. The car struggles to get up slight inclines, feels very under powered. My turbo gauge also doesn't know what it's doing now. My mate who is my mechanic is going to have a good look at it later, but just want to tell him what to check and look for. Thanks in advance.