E46CT

Here are some ways to get maximum fuel economy from your CT200h. Of course only do the following as traffic, road conditions, safety, and the law allows:

1) Regen braking. Without getting too technical, the hybrid system is able to slow the car down using electricity from the motor-generator unit when you step on the brake. This sends "juice" back into your hybrid battery which will in turn help propel the car forward when you need it and use less gas from the gas engine. If I got the terminology wrong, I apologize. But basically the friction from the spinning magnet against voltage applied to it slows the car down when you step on the brake. The technology makes my head hurt, but thankfully Toyota did all the thinking here.

The gauge cluster has a "charge" section near the bottom. You'll want the needle in that range as much as possible when you need to brake. But not beyond. If you apply more pressure to the brake pedal once the needle gets to the end, then the friction brakes (your brake pads) engage in ADDITION to the regen braking. You want to practice so that as much, if not ALL of your braking is done with regen. Of course you will brake as necessary or in an emergency, by all means floor the brake. But during normal driving, it's good to practice doing ALL your braking with the needle maxed out--but not further. Soon you can get a feel for braking as hard as possible without engaging the brake pads (friction brakes)

A general tip is as you see the traffic light starting to cycle through yellow then to red, begin your braking early and long as traffic safely permits. Basically drag your regen brake to capture as much energy back into the battery.



2) Taking off. Let the battery start your acceleration as much as possible and gently roll onto the gas to engage the ICE engine. Just as with an airplane, taking off from a standstill takes the most energy. So if you can get the car rolling with just the battery (electric power), you won't have to use gas. Of course being gentle with the electric takeoff is better than not. So be gentle all around.

3) Minimize slowing down. Plan your moves on the road far in advance and avoid unnecessary slowdowns. Try to take corners as safely as possible at the highest speed safety, traffic, and local laws allow. Try to avoid excessive speed shedding and maintain speed throughout a corner. The less you slow down, the less you have to speed up again.

4) Maintaining speed in a straight line. The car will naturally engage the regen braking if you let off the gas. So if you catch yourself needing to coast (not use the gas pedal) the car will actively shed speed if you let it, requiring you to use more power to gain back that lost speed. Basically don't let the needle fall into the "charge" section of the gauge unless that is what you want to do. I think some hybrids have a coast mode which disables automatic-regen during purposeful coasting. Also if you drive in hilly areas, gain speed down hill and coast uphill letting gravity do as much work as possible.

5) Tires. Maintain at least the recommended tire pressure. You can go up to 40 to decrease rolling resistance.

6) Alignment. Make sure you have a good alignment. Wheels pointed in opposing direction will cause unnecessary friction.

7) Aero. avoid any unnecessary/unused components on the body of the car such as roof racks, bike racks, etc.

8) Avoid running the fan and/or AC unless necessary. If it uses power, the ICE has to charge the battery back up.

9) Run with the pack. You can save a ton of energy by reducing aero drag by simply driving with a pack of cars. This naturally happens often in traffic, so avoid having to cut out to the front of the pack if you can. The cars in a pack will collectively move the air creating negative space and less resistance for you to overcome.

10) Mindset. Keep the mindset to drive calmly. Going a few extra MPH saves you very little time overall. Put on some good tunes, relax, and save some money. =)

Any other tips, please feel free to share. I am sure I missed some. Most of these apply to any car. But in particular the regen stuff is important for us hybrid drivers. If you are using your friction brakes too much (i.e., braking beyond the max charge area), then you are not effectively driving your hybrid as it was intended.

Raidin

Great post, E46CT! I tend to use all of your tips constantly.

I want to add that if you want to decide between the windows down or the A/C, but not sure which is more efficient, it's the A/C. Even though it uses power, it runs very efficiently and uses less gas overall than driving with the windows down.

If you can cool your car down with the windows down first, then run the A/C to maintain the temperature, that's even better. The A/C uses a lot of power when bringing the cabin to the temperature you specify. Once it's there, maintaining it is a breeze (*cough*) and uses minimal power. Look out for the dreaded ladder in the fuel economy bar graph screen.

humbak

On the photo I see EV mode engaged. This is the best way to take off, it's a good habit. Just push the button when halted before traffic lights.
Another suggestion - check the trunk, remove all unnecessary garbage.
Third - try feathering, means slight release gas pedal every 10-20 sec.

This is 18.45 mile, 75.88 MPG.


Good luck.

mrpairs

great post very informative, thank you !

fiveainone

Keep an eye on the "Current" display. Keep it above 40-60mpg. In Eco-mode, you'll notice that the indicator is just above the mid-point / 9 o'clock position. Any more than that, and the "real-time" mpg will go down to 30s or less.

Once you get use to it, you'll notice that if you're under 70mph, you can easily maintain any speed while still have the display above 40-60mph.

If you're under 50mph, you can maintain speed using EV by feather pressing the gas to keep the bottom EV light on. The "Power" display is also helpful to know which power is being used.

E46CT

Personally I crack the windows at speeds lower than 40 mph (not a definite speed, just my personal comfort level) I think the power usage of the electric compressor uses more energy than lost by having the windows open at low speed. The CT will get great mileage in both scenarios, but if you're counting electrons, personally I'll choose to crack the windows at low speed vs. turning on the A/C... unless it's REALLY hot outside I'll just use the AC full time =)

Also while waiting in a drive thru, I'll turn off all the lights.

Rockstar08

Since I just purchased my 2013 CT 200 this past weekend, can you tell me the times that you drive in the "B mode verses D" mode while driving? I know the B mode increases the Regen and makes the car slow down quicker but I am assuming that if you are driving in a lot of stop and go traffic like I do in Burbank that driving in the B mode is more efficient?

E46CT

B mode just engages the engine at a higher RPM than usual and also prevents engine shut off so you can drag the car to a stop using the engine + regen all the way down to 0mph. engine stays running.

so in short, B mode is *JUST* used when you need extra braking down a long hill and you don't want to kill your friction brakes. it tells the engine to help out. that's all.

So no, don't use it in stop and go if your aim is to save fuel. it will use more fuel

fiveainone

Yeah the only time it's useful in stop and go traffic, is when D is going too fast while coasting, and you don't want keep having to press brake. Putting in B then will let you coast better, but do remember that the engine may stay on. You can put it into EV mode manually while in B, but if you forget once it jumps off of EV, the engine will stay on most times.

Rockstar08

Thanks guys yes I was wondering why the engine was staying on in B mode but would always shut off in the normal drive mode. So yes it makes since to only use B mode on maybe a steep grade hill or mountain or if traffic is really bad as suggested. Thanks I am loving this car currently averaging in town for the past 3 days at 46.5 mpg unbelievable and the car has 132K miles on her..lol.. The last hybrid that I owned was a 2013 Honda insight which was reliable but boring!

E46CT

Yeah also limit B mode because it obviously puts more strain and wear on the engine. $25 brake pads are a lot cheaper than a worn out engine.

fiveainone

yeldogt

B mode in the Prius will not charge the battery .... don't use it thinking you are helping. I'm sure the CT is the same .

keeping the car in the eco range keeps the ICE out of its most inefficient range. MPG is all about the ICE ... at high speed it's just an economy car.

moderation wins with MPG -- using the power band available w/o exceeding ... lower top speeds on the highway.

longer slow downs.

jaymig2019

Quick question. I have yet to use that mode. But can it be shifted on the fly? or does it need to be engaged from a stop position?

spiral

you can shift into "B" mode at any time without issue, however, it's really designed to assist in slowing down on hills. I've used it once in 6 years just to see how well it worked. It was helpful and if I lived in San Fran I'd prolly use it a lot more.
Other modes (eco, normal, sport, etc) can be shifted at will as well.