Vehicle Compatibility Information Mazda 3 2.5L 2014-2018 Mazda 6 2.5L 2014-2018 Mazda CX-5 2.5L 2014-2018 Does throttle body need to be replaced? The throttle body plays a large role in controlling the fuel and air mixture in your engine.The proper mixture needs to be achieved in order for your engine to run smoothly and properly. Once this part fails, it needs replacing rather than repairing. When you need to replace the throttle body: .
