Different Types of Automatic Gearboxes Available in India Explained

Automatic transmissions are becoming increasingly popular among new car buyers, and understandably so, considering the ever-rising traffic in our country.

There are several types of automatic gearboxes are available in the market today, suiting various needs and budgets, meaning that there is an option for everyone.

The main ones are AMT, iMT, Torque Converter Automatic, CVT, e-CVT, and DCT/DSG. Here is a clear explanation of each transmission, how it works, its strengths and weaknesses, and some popular cars that they are offered in.

1. AMT (Automated Manual Transmission)

AMT is one of the most common and affordable automatic options. It is basically a regular manual gearbox with electronic actuators that automatically handle the clutch and gear changes. There is no clutch pedal, only brake and accelerator.

The system uses sensors and an electronic control unit to monitor speed, engine load, and throttle input. When it is time to change gear, actuators press the clutch, shift to the next gear, and release the clutch. This happens automatically in Drive mode. You can also take manual control using the lever.

Because it is based on a manual setup, it is light and fuel-efficient, but shifts can feel a bit jerky, especially during quick acceleration.

AMT is best for budget buyers who want the convenience of an automatic without spending too much. It offers good mileage but is not the smoothest for spirited driving.

Cars like the Maruti Wagon R, Maruti Swift, Maruti Celerio, Tata Tiago, Tata Punch, Tata Nexon, and Hyundai Grand i10 Nios offer AMT variants.

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2. iMT (Intelligent Manual Transmission)

iMT is a relatively new, clever transmission technology. It gets a proper gear lever, identical to a manual car, but skips the clutch pedal, as that is handled automatically.

The gearbox is like a normal manual, but it has sensors on the gear lever and an actuator for the clutch. When you move the gear lever to change gears, the sensor detects your intention and signals the system to automatically disengage the clutch, change the gear, and re-engage it smoothly. You only use your right foot for accelerator and brake.

It offers a more engaging drive than a full automatic because you control the shifts without any system kicking in.

iMT is ideal for those who enjoy shifting gears but hate clutch work in traffic. It is more affordable than full automatics as well.

Popular Kia models, such as the Sonet, Seltos, and Carens Clavis come with iMT options.

3. Torque Converter Automatic

This is the traditional and most popular automatic transmission. It has been used for decades and is known for its seamless performance.

Instead of a clutch, it uses a torque converter, a fluid coupling filled with transmission oil. The engine spins one part of the converter, and the fluid transfers the power to the other part connected to the gearbox. This allows the car to creep in traffic and shift gears smoothly without any jerk. Planetary gear sets inside provide different ratios, and the system changes them automatically based on speed and load. Most modern TC units have 6 or more speeds for better efficiency.

It is very reliable, refined, and good for long drives or highway use, handling hot Indian conditions well. The only drawbacks are its slightly higher fuel consumption and higher cost.

The Maruti Brezza, Fronx, Grand Vitara, XL6, Hyundai Creta, Kia Seltos, Skoda Kushaq, Volkswagen Taigun, and Toyota Innova Crysta are some of the many popular cars offered with a torque converter automatic.

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4. CVT (Continuously Variable Transmission)

CVTs are famous for their smooth and effortless driving feel.

Unlike traditional gearboxes with fixed gears, CVT uses two cone-shaped pulleys connected by a strong steel belt or chain. One pulley connects to the engine and the other to the wheels. The distance between the pulley halves changes continuously, varying the effective gear ratio without any steps. The engine stays at the most efficient RPM, providing seamless, linear acceleration.

It is very comfortable in city traffic with no gear shifts felt, and delivers good fuel efficiency if driven sedately. However, floor the throttle hard and you will feel like there is more engine revving noise than actual progress in acceleration, popularly known as the rubber band effect.

CVT is most commonly used by Honda across its model lineup. Hyundai and Kia call it the IVT, and offer it in models like the i20, Verna, Creta, Sonet, and Seltos.

5. e-CVT (Electronic Continuously Variable Transmission)

e-CVT is mainly used in strong hybrid vehicles. It is not a traditional automatic or CVT but a smart power-split system designed for maximum efficiency and smoothness.

It uses a planetary gearset that connects the petrol engine with two electric motor-generators (MG1 and MG2). MG2 usually drives the wheels, while MG1 can act as a generator or help control engine speed. The system continuously adjusts power from the engine and electric motors without fixed gears or belts. The engine can run at its most efficient RPM, shut off completely in electric mode, or work together with motors for extra power. Regenerative braking also charges the battery during slowing down.

e-CVT provides extremely smooth driving with no noticeable gear changes and excellent fuel efficiency, often above 20-25 kmpl in city conditions.

It is very reliable for daily use but works best in hybrids and may feel different from pure petrol automatics during strong acceleration.

Cars like the Honda City e:HEV, Maruti Suzuki Grand Vitara Strong Hybrid, Toyota Urban Cruiser Hyryder, Toyota Innova Hycross, and the Toyota Camry come paired to an e-CVT.

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6. DCT/DSG (Dual Clutch Transmission / Direct Shift Gearbox)

DCT is the sportiest and fastest-shifting automatic, and is popular in performance-oriented cars. The Volkswagen Group calls it DSG.

It is like having two manual gearboxes in one housing. One clutch handles odd gears (1, 3, 5), and the other handles even gears (2, 4, 6). While you drive in one gear, the system pre-selects the next gear on the other clutch. When it is time to shift, it simply disengages one clutch and engages the other in milliseconds, providing lightning-fast changes with almost no power loss.

DCT not only offers excellent performance and fun driving with quick shifts, but can be efficient too. However, in slow traffic or on hills, it can sometimes feel hesitant at low speeds, and repair bills can be very costly.

Popular cars with a DCT include Volkswagen Virtus, Taigun, Skoda Slavia, Kushaq, Tata Sierra, Hyundai Creta, and Kia Seltos among many others.

What Gearbox Do EVs Use?

Electric vehicles do not get traditional multi-gear automatics. They use an electric motor that delivers maximum torque right from zero RPM and can operate efficiently over a very wide speed range. The single-speed gearbox reduces the motor's high rotation speed to suitable wheel speed through a fixed gear ratio. There is no need for multiple gears or a clutch because the motor provides instant power and smooth acceleration without interruptions. The system is controlled electronically for forward and reverse.

This setup is very reliable, almost maintenance-free, and highly efficient with minimal power loss.

Most EVs in India like Tata Nexon EV, Tata Punch EV, MG ZS EV, Hyundai Ioniq 5, Mahindra BE 6, and many more use this technology. A few luxury high-performance models like the Audi e-Tron and Porsche Taycan use two-speed units, but single-speed remains the mass-market standard.

Which Automatic Gearbox is the Best?

Choosing the right automatic depends on your budget, driving style, and needs.

AMT and iMT are good for city use and saving money. CVT is super smooth for relaxed driving, and e-CVT shines in hybrids for best mileage and low running costs. DCT is for those who want excitement, and the single-speed technology in EVs offer rapid acceleration without power loss. Overall, a Torque Converter is the most reliable all-rounder.

Automatic cars may cost a little more upfront, but they reduce driving stress in Indian traffic.

Image Source: Maruti Suzuki, Toyota