A locally produced ton of hot rolled coil steel in India, an industry benchmark, is up 42% in price to $675, since January 2008, when Tata unveiled the Nano. Raw materials account for a higher portion of the costs of making a car like the Nano, and account for 23% of the costs of making the Nano, according to consultants Global Insight. This means margins will be harder to preserve on the Nano. As Ratan Tata, Chairman of the Tata group of companies put it at a shareholder meeting July 24, "if we passed on all costs to the consumer, it will affect demand, and if we don't it will affect margins". Tata is accomodating suppliers like Rico Industries that make the engine blocks that use steel for increased costs of raw materials. Other costs also are going up. For new car loans the interest rates are between 14 and 16% and fuel prices are going up making the cost of operating the 50mpg Nano costlier for those riding motorcycles. Tata faces other higher costs, its managng director Ravi Kant says the project for the Nano plant in Singur is costing more. The $470 million invested so far is 18% more than it had projected in January and double the amount stated when the prject was started in 2006....