Knocking is not problem as you learn to use it effectively. It occurs occasionally as I haven't heard it for last 2000km . It is the fuel quality which matters.
Turbo is being sold at an own of about 3 lacs in ISB. Production of turbo is temporarily halted due to which there is slight Decrease in its resale value in used car segment. But it is still selling near invoice price.
Its production is expected to resume in next month