The owner should know that turbochargers don't make a "growling" sound. It's a whining sound which kicks in after a small lag when you accelerate, followed by the hiss of the blow off valve after you take your foot off the pedal. Ask him about it again.
@legaleye thanks dear for replying that noise came only on acceleration so i think that is turbocharger sound.
The car milage is 53000 its 2006Model(New Shape) & 2008 Registered what should be its price Bumpers & one of fender is repainted. Its with full options including parking sensors.