The Volkswagen Vento recently got new features but we still await a proper upgrade to the most popular VW car in India. We recently spotted a red Vento TDI with test plates. Now there was no cosmetic changes to the car which could help us differentiate what is new. Volkswagen could just be doing routine testing of the Vento or probably testing a remap of the existing engine. A wild speculation could be the presence of a 1.5-liter TDI unit in the above Vento. Volkswagen could use the Vento to test the upcoming Polo engine. For cost cutting and inventory management, VW could adopt the 1.5-liter engine into the Vento as well. The speculated 1.5-liter TDI engine is a reduced version of the existing 1.6-liter TDI motor. The reduction in cc is done purely to ensure the Polo classifies as a small car and the company pays lesser excise on the vehicle, thereby pricing the car aggressively.