Review: Toyota C-HR Gear B

Introduction:
Normally, those who drive an automatic transmission car use the D gear on flat roads, downhill, and uphill. The D gear is a joker that makes driving easier since there's no need to shift gears.
What's new from Toyota on the C-HR?
In the automatic transmission, after the D gear, there is a notch that leads to the B gear, a novelty (this gear is also present on other recent Toyota hybrids).

Advantages of the B Gear:
1 - Rapid Battery Charging
This gear charges the battery faster because it engages a set of reduction gears that increase the current input to the battery, resulting in faster charging under two conditions: when the car is launched and when it is descending. However, it is important to engage it only in these two conditions because, being a reduction gear, it slows down the car when launched and slows it down on descents. If this gear is left in during normal driving conditions, such as in urban traffic, on highways, or in parking, the B gear increases fuel consumption because the reduction gears brake the car and, to achieve the same speed, you must push on the accelerator, resulting in higher consumption.
2 - Brake on Descents
You will surely have noticed, driving an automatic transmission car downhill, that, unlike manual transmission cars, it is not possible to reduce speed by engaging lower gears because, obviously, they do not exist. All you can do to reduce speed is to continuously use the brakes. It is clear that this type of driving results in higher consumption of brake pads compared to cars with traditional transmissions. To overcome this inconvenience, Toyota has added the B gear on the C-HR, which by activating the reduction gears reduces the car's speed.
If you observe the battery icon on the display with its green stripes indicating the current charging state, you will notice that when the battery reaches the state of maximum charge with the green stripes occupying the entire rectangle, the engine noise increases. This happens because the engine's RPM increases. It's as if, in manual transmission cars, a lower gear was engaged. The result is the same: the car decreases speed with less use of the brake and the engine's RPM increase.
3 - Savings on Brake Consumption
From the above, it follows that by reducing speed with the B gear, the brakes will work much less and this driving style will lead to less wear on the brake pads and thus a saving on the operating cost of the car.
Disadvantages:
1 - Higher fuel consumption if the B gear remains engaged in normal driving conditions, such as in urban traffic, on highways, or in parking.
2 - With the B gear engaged, it is not possible to use the radar and all its applications, for example, Cruise Control (speed control), IPA (Intelligent Parking).
3 - Noticeably more pronounced and somewhat annoying noise on descents when the battery is fully charged, but this noise can serve as a warning. Therefore, it can be a point in favor.
Conclusion
The advantages are so superior to the disadvantages that any further consideration is unnecessary. The B gear is a great aid to driving, safety, and cost reduction, as the more you use it, the more you save, but be careful not to forget it engaged in normal driving.
Also read the complete review with everything that has happened starting from 2017 to our days:
"Toyota C-HR Hybrid. Review. Goods, faults and solutions!"