Studies show the Toyota lean production system delivering reliable cars made from proven components and low after-sales warranty costs, cost efficiencies give Toyota high profit margins, the productivity of a Toyota employee in terms of cars/employee per annum is double the figure of rival VW group. It is no surprise Toyota can offer owners a 10 year warranty. Toyota can swallow those costs in their finances, costs which would cause their competitors to gag and choke over red ink on the balance sheet.