What is the Difference Between Continuously Variable Transmission and Automatic Transmission?
4 Answers
Continuously Variable Transmission and Automatic Transmission differ in their nature: Continuously Variable Transmission, as the name suggests, is a transmission without fixed gear ratios, meaning it has no distinct gear positions. For example, electric motors utilize Continuously Variable Transmission. On the other hand, Automatic Transmission operates with each gear controlled by a set of clutch plates to achieve gear shifting. Automatic transmissions use solenoid valves to control these clutch plates, making the system simpler and more reliable. The transmission primarily refers to the vehicle's gearbox, which is divided into manual and automatic types. Manual transmissions mainly consist of gears and shafts, achieving speed and torque changes through different gear combinations. Automatic Transmission (AT) is composed of a torque converter, planetary gears, a hydraulic torque conversion system, and a hydraulic control system, achieving speed and torque changes through hydraulic power transmission and gear combinations.
As a new driver who just got my license, I've been researching this comparison recently. The CVT (Continuously Variable Transmission) feels incredibly smooth to drive, with no jerky gear shifts at all, as it adjusts the gear ratio using pulleys and a belt, making speed changes very linear. In contrast, an automatic transmission uses fixed gears like 6-speed or 8-speed, which can feel a bit jerky during acceleration. It feels stable on highways but can be annoying in city traffic jams. In terms of fuel efficiency, CVT is more economical—my small car saves about 1 liter per 100 kilometers in real-world tests, making it more eco-friendly. However, maintenance costs are higher, as the belt needs regular replacement to avoid wear and tear issues. Overall, I lean toward CVT—it's economical, practical, and quiet, perfect for relaxed daily commuting.
Having worked as a helper in an auto repair shop for years, I often encounter customers asking about transmission issues. Simply put, CVT (Continuously Variable Transmission) is lightweight with no gears, relying entirely on a pulley system for operation, offering high efficiency and low noise, but the belt is prone to aging and repairs are costly. Traditional automatic transmissions, on the other hand, are sturdy with multi-stage gears, providing quick shifting response and strong power at high speeds, though they can feel slightly sluggish at start-up. I've seen CVT cars often face difficulties when the belt breaks, with repair costs running into thousands; automatic transmission failures are mostly due to clutch wear, and replacing parts is cheaper. When driving, CVT offers a smoother ride, making it suitable for beginners, while automatic transmissions perform better when climbing hills or overtaking. My advice is to choose a car based on your habits rather than chasing novelty.
I drive a car with a continuously variable transmission (CVT) every day for commuting, and the experience is incredibly smooth and seamless. Without the interference of gear shifting, commuting becomes much easier. Automatic transmissions have a noticeable gear change sensation, providing stability at high speeds but causing jerks and fatigue in congested areas. In terms of fuel consumption, CVTs have the advantage, saving an average of 10% and being more environmentally friendly with lower emissions. Automatic transmissions offer more direct power output and faster acceleration. Maintenance is simpler and cheaper compared to automatic transmissions, but CVT fluid needs to be changed more frequently to avoid issues. As a commuter, I recommend CVTs—they are practical enough for city life.
