If you drive a hybrid Toyota Corolla or Prius, you may wonder what the B is next to the D on your gear shifter. Is this meant to be used all of the time or just in certain circumstances? It’s critical that you understand the Toyota B Gear before you shift into it.
That’s why our experienced technicians have put together a helpful guide showing you what the B gear is and when it should be used. We also cover the pros and cons of this system right before we answer your most-asked questions.
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What Is The Toyota Corolla and Prius B Gear?
The B Gear on a Toyota Corolla or Prius stands for Brake, and it is meant to create more drag on the car when going downhill. It generates maximum braking force in your hybrid Toyota. The additional friction created between the road and wheels is used to slow you down and recharge the battery at the same time.
The B gear isn’t beneficial when driving on the highway in normal traffic conditions. During this time, it will only use too much fuel because of the added drag created.
When To Use The Toyota Corolla & Prius B Gear?
With a regular automatic transmission, the gears below the D are lower gears. They are very similar to the B gear because more engine drag is created, allowing the vehicle to slow down. For this reason, the best time to use the Toyota B gear is when you are heading down a steep incline.
To use the B gear on a Toyota Prius or Corolla, follow these tips.
- Slow down: To ensure maximum safety, you need to slow the vehicle down.
- Switch to the B gear: Press the B button on the gear shifter knob.
- Prepare: The engine will initially rev at first. This could be distracting if you aren’t used to it. The vehicle is also going to slow down.
Once you are done using the B gear, switch it back to D. You don’t want to continue using this gear in normal driving conditions.
If in doubt, use the B gear the same way you would use lower gears in your car. Lower gears aren’t just for heading downhill but also for pulling heavy loads. However, it’s unlikely you’ll be carrying too much equipment in your Prius or Corolla, as this isn’t a very large car.
Pros of Toyota B Gear
Just because the Toyota Prius or Corolla comes with a B gear doesn’t mean you always want to use it. Let’s review a few of the top advantages of the B gear so you know when it’s helpful.
1. Good for Driving Downhill
As you start heading downhill, the car could start to move faster than what you want. Instead of riding the brakes, you can use the B gear to slow down.
This gear allows you to maintain safe speeds when going down a steep descent. The increased drag reduces how much you need to brake while on the hill.
2. Recharges Batteries
Your hybrid Corolla or Prius needs to get power to keep the batteries in optimal condition. One way to recharge the batteries is to use the B gear.
When in B gear, the hybrid batteries start recharging. With the increased engine drag, regeneration occurs.
How do hybrid batteries recharge without the B gear? The battery packs reclaim energy through regenerative braking. As you brake or coast, the electric motor that normally drives the wheels now works as a generator to charge the batteries. The kinetic energy from the friction is turned into power that creates energy. With a normal car, this kinetic energy would have been lost as heat.
Additionally, the gas engine charges the batteries while you drive. It’s similar to the setup of the alternator and the starting battery.
3. Reduces Need for Brakes
The B gear ensures you don’t need to ride the brakes. With the help of engine braking, your conventional brakes remain in better condition.
If you were to rely solely on the brakes, you would need maintenance more frequently. Just imagine all of the potential money you can save on brake pads and rotors simply by using them less. The brakes could also overheat, which is all avoided with this system.
Cons of the Toyota B Gear
The B gear can provide a lot of support to the hybrid driver, but it’s not meant for constant use. In some ways, it has some serious disadvantages, although many of them aren’t a big deal. Here are just a couple of reasons you won’t want to use it.
1. Hurts Fuel Economy
When the car is in B gear, engine drag is increased. During this time, you can expect the car to use more fuel than during regular travel.
Depending on how it is used and for how long, you may not notice the difference. On the other hand, it could drop fuel economy rapidly, costing you a lot more at the pump.
2. Adds Battery Strain
When going downhill with the B gear, you are going to charge the battery. This is a great way to get more efficiency out of the vehicle.
However, if you use it during normal driving conditions, the battery won’t be charged. In fact, it may prevent the battery from holding a charge.
3. Reduces Speed
If you are driving at higher speeds, the B gear is going to cause problems. The sudden change in speed can lead to skidding.
To prevent this from happening, you want to lower the speed of the vehicle before switching to B gear. Otherwise, the ride could get very jerky during the transition.
What Is The S Gear in my Toyota Corolla?
Your Toyota may include both a B and S gear, depending on the Toyota model. You can find out what gears your model has in the Toyota owner’s manual. While B stands for Brake, the S gear means Sport.
It works opposite of the B gear. Instead of slowing speeds down, it’s going to speed up the performance. When using this gear, the vehicle operates more like a sports car, especially when going through twists and turns.
The similarity between the two is that they both can use more fuel. The B gear uses more fuel because of the drag, while the S gear burns through gas because it increases the power. For this reason alone, neither of them is recommended for everyday driving situations.
Frequently Asked Questions
What is the B on my gear shift on a Toyota Camry?
If you drive a hybrid Toyota Camry, you may see the B gear. This gear stands for Brake and it’s used to slow down the engine speeds, especially while heading downhill. It creates more drag, so you don’t need to use the brakes as much and the battery gets a recharge.
How do you drive in B mode?
As you start going down a hill, you want to slow your speed down as much as possible. Switch into the B gear and prepare for speeds to be harnessed further. Once you have gotten to the bottom of the incline, put the car back into Drive to enjoy the road normally.
What is gear B used for?
The B gear is used on Toyota hybrid models and it stands for Brake. Activate this gear when heading downhill to alleviate the need for brakes. Because of the added engine drag, you’ll also achieve some added battery recharging for increased efficiency.
What does B stand for in a Toyota Corolla?
The B gear means Brake. With your hybrid Toyota Corolla, this gear is used to reduce the need for braking while heading downhill. With added engine drag, speeds are reduces and the battery will be recharged. It’s not meant to be used for normal highway driving.
There are a lot of neat features available with your hybrid Toyota Prius or Corolla, including the B gear. If you haven’t used the B gear previously, it’s time to learn how. Now that you’ve read our handy guide, you should have a better understanding of this special gear.
Start practicing with it as you head downhill. You will get the hang of it after some practice and it may become one of your favorite features over time. Just remember to switch out once you hit the open road again or the drive will be severely hindered.
- What Does D3 Gear Mean in Automatic Cars?
Simply put, the Prius B mode stands for “braking.” This position is for shifting into a lower gear and increases the engine's drag to help slow your vehicle down.What is the B mode on a Toyota Corolla? ›
The "B" position favors lower gears, too, but for a totally different purpose. Just as you might shift a conventional transmission to Low on a long downhill grade; you can shift into the "B" position to increase engine drag and help slow the Corolla while coasting down a hill.What does the B gear mean on Toyota hybrid? ›
Toyota hybrids are designed to give the driver maximum control over the vehicle, including driving dynamics, and this is ultimately the purpose of the 'D' and 'B' modes that sometimes confuse clients. Put simply, the 'D' mode is for normal driving, and 'B' mode should be used when you are going downhill.What is the use of B gear in automatic car? ›
In an automated vehicle, the "B" stands for "Brake." Not all automatic vehicles have this mode, but in some models, it is used to provide additional engine braking. The transmission will change to a lower gear when you put the car in "B," allowing you to utilize the engine to slow it down rather than simply the brakes.Should I always drive in B mode? ›
The B stands for brake and not the battery. So, if you're driving on a regular pavement with the B mode, you're only recovering braking energy and not energy for the battery. So don't shift to B on the grounds of saving energy.Can you drive in B mode all the time? ›
I don't like the fact that when you are in B mode and release the accelerator, the brake lights come on. LedFoot said: I stayed in B mode for my entire commute home from work today, for the first time, and ended up with pretty solid results: I drive in B mode all the time.When should I drive in B mode? ›
B mode may also help in icy conditions, as braking on slippery pavement can cause your vehicle to slide. Downshifting into B mode can help slow your car down without stopping abruptly and potentially slipping out of control.What does B mode do? ›
Placing your LEAF's shift lever in B-mode will enhance the vehicle's regenerative braking efficiency, helping to charge the battery and provide a longer range. Employing B-mode for downhill driving also enhances range.Can I shift from D to B while driving? ›
You can do it at any speed except below 15 MPH. If you switch to B below 15 MPH, it will regen brake to recharge the battery (gas engine shutdown).What are the drive modes for Toyota Corolla Hybrid? ›
The most common ones among our new Toyotas are Eco, Normal, and Sport. Some models also include a Snow mode for taking on tough winter weather. Hybrids typically have one additional mode – EV mode.
The i4 uses “blended brakes.” In B mode, 100% of the available recuperative braking is used when you let off the pedal. Any use of the brake pedal uses the rest of recuperative braking before using friction braking.What is the B gear in an automatic car uphill? ›
On Uphill Roads
Besides braking, B gear can also be used to help the car climb uphill roads. This is because, in this position, the engine will have more torque to push the car up the hill.
In D the car behaves like every car you've driven before in high gear, with the engine freewheeling when you ease off the accelerator. In B the right pedal becomes more like a speed input, with gentle engine braking (actually regeneration) happening when you lift your foot off.What mode should you drive in hybrid car? ›
EV mode is the most efficient way to go since no gas is being used, but for plug-in hybrid vehicles, battery size limitations mean the available electric-only range is relatively short. Once that's used up, it transitions into the other modes. EV Mode – Black icons and blue arrows indicate flow of power.Is it OK to drive Prius in power mode? ›
Yes. Power (PWR) mode only changes the mapping of the pedal position to throttle as shown below: The effect is that at low speeds, the Prius accelerates more when you depress the accelerator. At high speeds, there is a less change in acceleration.How to drive a Prius efficiently? ›
- Prius Driving Tips 1 – Coast downhills:
- Prius Driving Tips 2 – Drive at slower speeds where possible:
- Prius Driving Tips 3 – Allow your vehicle to warm up:
- Prius Driving Tips 4 – Use cruise control:
- Prius Driving Tips 5 – Use less air conditioning:
- Prius Driving Tips 6 – Drive on level ground: