Based on my rough calculation, you will only save QR 1000 every month. If you rent a one-bedroom-old-apartment unfurnished for QR 5500, pay monthly installment for Corolla or Nissan Tiida for QR 1600 (4-years), food+drink QR 2000, gasoline QR 200, hala card QR 200, phone+internet connection QR 233, satelite TV QR 45, then miscellaneous QR 1000 (traffic violation, annual fee of credit card QR 200, social activity, etc.)