China’s vehicle sales are the world’s highest for four consecutive years, accounting for about 60% of the national oil demand. Since 2007, iCET has been developing and updating a China-tailored passenger vehicle fuel-consumption and life-cycle emissions inventory tool promoted through annual reports and a free user-friendly website (www.greencarchina.org). These have been aimed at informing sustainable decision-making at all three pillars of China’s on-road private vehicle market: policy-makers, auto-makers and consumers. iCET’s 2013 green vehicle rating report (coming on Chinese Energy Conservation Week in June) will integrate “real-world” data provided by China’s Vehicle Emissions Control Center for taking China’s vehicle data disclosure one step forward.