The rising levels of air pollution in the national capital forced the government to ban diesel vehicles, throwing automakers and the auto market into chaos. The market for SUVs was majorly affected since these brutes are usually powered by big diesel engines. Automakers like Mahindra downsized their engines, while others introduced petrol variants of their SUVs. Luxury automakers mostly went for the second option. BMW recently introduced the petrol variant of its popular SUV, the X3, and it competes with the other luxury petrol SUVs introduced this year, like the Mercedes-Benz GLC and Land Rover Discovery Sport. Let's see how these SUVs stand against each other.