Nissan India is all set to increase the prices of its bestselling models- the Micra and Sunny, effective from January 20, 2012. Based on the model, the hikes can go up to 2.09% and while the variants of the Micra Diesel have risen by Rs 3000, the diesel variants will be an additional Rs 20,000. The Sunny will also witness a price hike with the petrol variants becoming costlier by Rs 5000 but the diesel variants remain unchanged.