Final answer:
The 2022 Maxima's Intelligent Engine Brake (I-EB) varies the drive ratio primarily to enhance performance, but as a benefit, it may also improve fuel efficiency and reduce engine wear.
Step-by-step explanation:
The Intelligent Engine Brake (I-EB) in the 2022 Maxima varies the drive ratio to enhance performance. This advanced transmission technology, which can be found in systems like dual clutch transmissions (DCTs) and continuously variable transmissions (CVTs), is designed to work seamlessly in the background to reduce energy loss during transmission, matching engine speed to changing vehicle speed more effectively.
While not the primary goal, these advanced transmissions can lead to improved fuel efficiency and reduced CO₂ emissions, because they keep the engine operating at an optimal speed, which minimizes unnecessary fuel consumption. There is also a potential to reduce engine wear over time due to smoother shifting and less strain on the engine components during acceleration and deceleration. As a result, a system like the I-EB has multiple benefits although its main objective is to enhance the driving experience by providing smoother transitions during speed changes.