There is no doubt that the six-speed manual transmission is more advanced than the five-speed manual transmission. But the car with a 5-speed or 6-speed transmission should also be combined with the characteristics of the power system to match, not to say that the 6-speed is more advanced than the 6-speed, that 6-speed is definitely better.
Why a 6-speed manual transmission is better than a 5-speed transmission
Through the experience of bouncing a car, because of the high-speed driving of more than one gear, it can further reduce the engine speed and save energy. For example, many of the previous 4-speed automatic transmissions have now been replaced by 6 AT and replaced with more gears. And now it seems that 6 AT will soon be replaced by 8 AT, 9 AT, 10 AT. Therefore, the more gearbox gears there are, the more advanced it must be.
Are there any other obstacles? No, depending on engine power.
Because the higher the gear, the greater the driving force required by the engine, the gear of the gearbox must also match the power of the engine and the characteristics of the vehicle.
For example, a car with a 1.5 T turbocharged engine, matched with a 5-speed manual transmission, is between 120 hours and 3,000 rpm per hour. But the 1500 rpm engine can produce maximum torque, and running at 3000 rpm is a bit of a waste. So a 6-speed manual transmission is available, and if you run another 120 km/h, the engine speed will be reduced to 2500 rpm, and the power is still sufficient and fuel-efficient.
Another example of a bouncing car, another car uses a self-priming engine of 1.2, the maximum torque speed is 3500 rpm, if a 5-speed transmission is used, then the engine speed of 120 is 3000 rpm, basically in the usable state. At this time, you have to change to a 6-speed manual transmission, then the engine speed at 120 per hour is only 2500 rpm, for a small displacement naturally aspirated engine, the power is a bit difficult, either sit more than a few people, or lack of power when going uphill. This car is not suitable for a 6-speed manual transmission.
In addition, the structure of the rear gearbox is more complex, and the internal consumption of the gearbox is also greater, which is tantamount to worsening the original underpowered engine.
More accelerators, more fuel efficient? Bouncing a car means not necessarily
Fuel saving at 6 speeds than 5 speeds is only the most used gear, if you run the city every day, even 5 gears can not be used, it does not reflect the advantages of fuel saving.
Secondly, for a well-powered car, driving at high speed with a 6-speed manual transmission is certainly more fuel-efficient than a 5-speed manual transmission, but a car with insufficient power is not necessarily the case.
This is the 5-speed manual gearbox for the front-drive car, and it can be seen that its construction is very simple, requiring only two shafts to meet all gear requirements.
In addition, this is a front-drive 6-speed manual transmission, in order to install more gears, directly added a shaft, the transmission structure is more complex, more parts, friction during work, gear rotation and shaft rotation all need to consume the energy of the engine, so it is not suitable for low-power engines.
In short, the 6-speed manual transmission is definitely more advanced than the 5-speed manual transmission by comparison, but the transmission that matches it must match the engine power system. And the advantages of fuel consumption savings can only be seen when using the maximum gear.