The running of the engine contains many various things such as timing of the valves, the mixture, etc.
Mixture is nothing but the combination of fuel and air in the vehicle engine that come through the inlet valves of the engine. Maintaining the proper stoichiometric ratio is very important in the engine that is nothing but the exact amount of air that is intake in the cylinder of the engine to burn the entire fuel. The mixture can be different as per the use they are going to make. For example, the ratio of 16 to 20:1 is known as lean mixture for better fuel economy and ratio of 12 to 13:1 is known rich mixture in order to get the maximum power of the engine. Every vehicle has various mixture ratios based on their use.
With the Vitara Brezza, Maruti takes teh sub4 meter battle straight to Ford Ecosport, a compact SUV which since it's launch did not have a worthy competitor. Vitara Brezza is banking on huge fan following of Maruti's badge to make a dent to Ecosport sales. And if Ford action o fcutting prices of its most popular car is any indication, it seems to have ruffled feathers in competing camp. How well Brezza stand up to Ecosport, read and decide. For us the decision is still pending.