Brother i am running charade diesel engine, 88 model charade (anda shape)
and i have done mechanical work and many other experiments , overall engine is fine, if you drive this diesel engine with slow paddle or firm paddle then consumption is very good, almost 20 km plus in one liter, otherwise if you go for fast pickup and long shifting over driving then it will not go above 10 or 12km in one liter.
engine is very tough one, in rain, winter, summer, it is good, never stop working, and there is no heatup problem either. overall engine good hai, but petrol ki nisbat pickup nai hai bilkul b, awaz thori zayada hai diesel engine ki wajahse, and diesel ki smell b hoti hai gari may har time.
i hope this will help you.