What Is AMT Or Clutchless Or Auto Gear Shift EZ Drive Transmission System?


We did a story earlier about “Whether I should buy a manual or automatic transmission car” in which we shared the advantages and disadvantages of Manual VS Automatic transmission. In past few years, the technologies have advanced much beyond the conventional thinking to bring the best features of both of them in a new Auto Gear Shift or EZ Drive or Semi-Automatic or Automatic Manual Transmission (AMT) system. I will not try to bore you here with too much technology terms, but will try to explain it in simple language here. But to understand the differences and what AMT is, lets see what is a conventional Manual Transmission and a conventional Automatic and then lets look at the new Automatic Manual Transmission (or AMT) or Auto Gear Shift system.


Why Do We Need Transmission System?

Before we dive into details, transmission is a part of the car which connects the engine to the wheels. When car speeds up, the engine can not speed up in the same proportion, so there are gears involved which match the engine speed to the wheel speed so that we can drive faster or slower than the engine speed.

What is Manual Transmission System?

When the driver manually selects at which gear (depending on speed) should the car run, and he/ she changes the gears using a clutch, it is a manual transmission. Clutch is the part which connects the engine to transmission, when driver needs a gear change, he/she presses clutch pedal/lever, which disconnects the wheels and engine, he/she changes the gear and releases the clutch which puts the wheel back in connection with the engine. With changed gear, the speed range of the car changes. This is why when we go faster, we put higher gears. The reason behind this is that engine has only a limited speed range. I will not go further into tech here for the sake of our non-engineer readers here.

Grand i10_Mannual Transmission


  • Simple system and easy to maintain
  • Low cost
  • Gives high fuel economy as there are no losses


  • Tiresome in stop and go traffic
  • Gear shift speed depends on driver prowess, and some may not be able to extract the maximum out of the car

What is Automatic Transmission System?

conventional automatic transmission system

In automatic transmission, there are again gears like we have in manual, but in this case, instead of conventional clutch, there is an automatic mechanism called torque converter which works with some fluids and turbine mechanism (will not go in its details here). When the speed of the car changes, the torque converter helps change the gears automatically, so the driver does not have to operate clutch lever to change gears.


  • Easy to operate
  • Freedom from manually selecting gears


  • Enthusiastic drivers like manual better than automatic as it offers more flexibility and manual control
  • Torque converter has transmission losses (energy loss) which causes loss in fuel economy
  • More complex system than manual, so its more expensive to maintain / replace

Video: Automatic Transmission Explained

What Is Auto Gear Shift EZ Drive or Semi-Automatic or Automatic Manual Transmission?

Clutchless transmission is almost the same at the manual transmission, but in this case, the clutch operation is automated. Like the manual transmission system, gear has to be selected by the driver only depending on his/her selection, he/she has to change the gears, but without operating the clutch lever. In this case, an electronically controlled (microprocessor based) system is used to identify when the driver changes the gear, an electrically operated (power operated) system depresses the clutch automatically when the gear is changed. The components of the system are almost same as manual transmission, just than an automated clutch mechanism is added to it for the comfort of the driver. The most tiring part of a manual transmission is to operate the clutch lever, once that it eliminated, the effort is reduced to just selecting and changing gears. In nutshell, it takes out the tiring part of the driving from the manual transmission and still leaves the choice of changing gears with the driver. One such system called eClutch has been developed by Bosch which works on the same principles.

clutchless transmission AMT eclutch system


  • Freedom from operating the clutch lever
  • Very comfortable for stop and go traffic
  • Better mileage than automatic transmission (less transmission losses)
  • Lower cost than automatic transmission


  • More expensive than manual transmission
  • Not widely available

Video: Suzuki Suto Gear Shift System

What Are Other Alternatives? Dual Clutch Automatics?

If cost of the transmission can be overlooked (such as in performance or luxury cars), there are even better systems which are available. These systems cars called Dual-Clutch Automatic transmission systems. These are generally equally or more expensive than the conventional automatic systems, but they are really good in terms of efficiency as well as performance. The way they operate is that instead of one, they use two-clutches which connect with even and odd number of gears. When the car speed changes, the transmission system (controlled by a microprocessor unit), selects a gear  (depending on load, speed, driver’s throttle input and many other factors). After selecting the gear, the system automatically engages that gear in almost no time as it has two clutches, so one clutch is dis-engaged and other is engaged. This process is very fast, efficient and comfortable to use, but since it involved more components and electronics, it is more expansive than all other 3 which are mentioned above.

[box type=”success” ]Some such examples are DGS automatic transmission from Volkswagen and Dual Clutch automatic system by Ford.[/box]


  • Very comfortable for any kind of traffic
  • Better mileage than automatic transmission (sometimes better than manuals)
  • Better performance as gear shifts are fastest compared to other systems


  • More expensive than all other transmission systems (for now)
  • Not widely available


[box type=”success” ]While the Clutchless Transmission or Automatic Manual Transmission is not the least expensive transmission system, but it is one of the more comfortable, fuel efficient and yet affordable option among the conventional manual, conventional automatic, dual clutch automatic and semi-automatic transmission systems.[/box]

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  1. Can the Bosh clutchless system be retro fitted in my existing cars ? and at what cost ?
    Accent – CNG (traditional cheep Chinese type) ?
    I10 – CNG – Sequential ?
    Ford Figo – Petrol ?

  2. Most ideal automatic gear selection will be based on the torque gauged in transmission. If some one offer such a design will SUZUKI be interested ? If yes please contact. Most competiive, highly efficient, less wear and tear of moving parts, fuel efficiency are part of design.!!!

  3. Presently I use Wagon R, Gas & Petrol version. Self driven. However, due to knee problem I find it difficult to change clutch very often leading to pain. Hence, am thinking of switching over to a sedan automatic gear system Car. I need suggestions about a good car ; My budget is around 8 lpa only. Prefer Sedan to have more comfort. concerned about mileage and maintenance cost. About 1000 KMS running per month — Self driven most of the time.

    Would appreciate good inputs to make decision. I am non-technical person and know very less about Cars, except that i drive a car for the last about 15 years. Used Hyundai Santra and now Wagon R>

  4. I own a Grande Punto 2012 Diesel with manual gear shift, wondering if my car can be converted to an auto transmission(Any type). Please reply with available options, cost and addresses in Pune that can facilitate.

  5. Sir can u please go in details about automatic transmission and automatic manual transmission? I would like to know more in detail…I am currently doin b.tech in Mechanical engg.

  6. when dual clutch transmission system is more efficient and better to other transmission system, so why it’s not use in racing car , f1 car .?

  7. Please give me access to the video “Suzuki Auto Gear Shift System” or send me that video , I am doing a seminar.

  8. At present I am using i10 GrandSports with manual gears . I want to convert into ATM (auto gear) is it possible for conversion and what is the cost in Hyderabad, Pl informed the workshop

  9. There are some after-market semi-automatic systems available. However, we don’t recommend these as these systems require modifications with the car and aren’t too reliable. Best thing to do is to switch to an automatic car.


  10. I own a newly acquired maruti suzuki vxi autogear shift vehicle
    My question is whether I can shift safely from automatic to manual and vice versa while the car is in motion, that is, when I am about to go up a gradient or when I am on level road after coming down a slope

  11. Can I convert my wangor vxi manual transmission to auto gear in Hyderabad, is it possible or not in Hyderabad & if yes what would be cost involved in it. Any vendors details

  12. At present I am using Hyundai i20 sportz petrol Elite,2016 August Model, with manual gears . I want to convert into ATM (auto transmission gear) is it possible for conversion and what is the cost in Hyderabad, Pl informed the workshop also.

  13. Mr. Kames, dual clutch transmission is not used in race cars because they are very heavy. In race cars, sequential manual transmission is preferred where gear shifting mechanism is placed near steering wheel.


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