I have never cleaned up carbon deposit before, and my car is also very good!
As long as it is a fuel engine, carbon deposits are inevitable. It is possible that the response of the new car is not obvious, but it will be serious for a long time. If it affects the engine work, it will not only increase the cost, but also cause damage to the engine. It appears that the speed is unstable, the car is shaking, the sound is increased, the fuel consumption is increased, etc., and the engine oil is burnt seriously, causing the engine to overhaul in advance. Therefore, it is necessary to use a car carbon cleaning machine for carbon removal.