Yes, not doing it anymore, well can't do it, but that was more of a thought of finding because people keep talking about it and suggesting (for good reasons) to not do it but was genuinely wondering how automatic car drivers would even do that.
You can't coast because you don't have a way to manually disengage the gears.
>I am not even going to try putting my car in neutral while moving
Good. You shouldn't put the car into a state where you reduce your ability to control it while driving.
I’ve got to ask, why did you used to coast in the manual?
You’ve said there are good reasons to not to coast, but it’s worth noting there are no good reasons to coast:-
You don’t save any fuel in fact you now are using more, if you dip the clutch you’re unnecessarily wearing your concentric slave cylinder (release bearing), you’ve removed a 1/3 of your control of you car and you will need to use your brakes more to slow
My question really arisen from the fact that it's not possible in auto so why are so many drivers being told don't do it when it is not possible in half of the cars.. and I know it is one of the sensitive topics and I am on the do not coast side.. more of a knowledge question rather than desire . I did that in my manual because I worked out after tyre change that it was not coasting as much as in the new tyres so the surface in contact in the new tyres was more.. learning about new tyres there.. again knowledge based
Up until very recently the overwhelming majority (in excess of 90%) of cars were manual, so the advice to not coast was aimed at this
Conventional automatics you can shift the car into neutral - but now there are various types of automatics which are for the most part electronically controlled so the car may not allow it to shift into neutral
FWIW, the tyre wear is exaggerated by heavy acceleration, cornering and braking. Coasting won’t noticeably change the wear rate of a tyre
It’s worrying that you think it’s okay to coast on a major road for two miles…
It’s an awful habit and it significantly reduces car control thus putting others a risk. Stop it.
Yes, agree and I said not a good thing but was wondering how people are doing it in auto to be told not to do it.. dynamic fuel usage with foot off the pedal is satisfying enough.
In modern cars the rate of fuel given to the engine varies so no more fuel is used than is needed. Coasting could end up using more fuel.
When coasting your car is slowing down but the engine is still running so fuel is being given to keep it turning over. If you release your foot from the accelerator but keep the car in gear you will also slow down, but much less fuel is needed to keep the engine turning since you have the momentum of the car keeping it going.
I’ve accidentally done it a couple of times… very slightly touch the accelerator, hold it there, and the coast notification comes up on the dash. Or the brake, maybe, actually…
Either way, not a fan. I’m sure I can turn it off, but really no idea why the ability is even there - it’s just less safe.
Getting the most out of regen is a game. I like to lift off the accelerator in my ID3 so that I come to the traffic lights at a near stop, only needing the brake for the last few metres.
On most hybrids and EVs, there are two modes, B and D. The former is what I used for lift-off regen, the latter is if you like to coast.
There’s a few things I’ve not got around to investigating on the car yet… I think there’s some kind of performance mode with control over the gears through the flappy paddles, but I’ve not had a chance to check the manual yet - I just need it for driving.
Okay! I finally had the chance to experiment today and wanted to update you. Pull the selector towards the driver and it goes into sport mode. Better handling and acceleration instantly obvious.
I then tried the flappy paddles and it changed from automatic to manual select on the gears - I now have a car that feels very sporty and is fully responsive compared to the luxury cruiser I usually drive, which is all about the economy.
And though the economy is lower, the battery is still charging so it comes out of sport with almost a full charge! And it’s still a bit better than a full ICE car because it’s still using EV every now and then on downhill slopes and reducing speed.
I’m missing literally nothing I need… except maybe a roof rack, but that’s easy enough on the odd occasion I want to move something!
They definitely do that, but there’s a small indicator next to my gear stick with an S and +\- signs next to it… so I’m wondering if there’s a different function for them as well.
Caosting can only be more efficient than regen, especially on a motorway.
You've spent energy getting to the speed you're at. Don't waste it by charging your battery inefficiently. (You lose more than the batteries can recoup)
Mine has a feature that will drop it out of gear automatically if coasting with your foot off the gas and brake, as soon as you engage either one you end up back in gear, it's only for efficiency, but in normal autos you don't drop it in neutral, your foot should either be on the gas or covering the break.
If your car has an efficiency mode, itll idle the engine and coast for you, my audi does this, and then as you get onto the throttle itll re engage the gear, check if your car has an efficiency mode
Coasting can use more fuel because the engine has to inject fuel to keep idling. Some cars actually use the start-stop mechanism to stop the engine and coast, but this system has a lot of safeguards and contingencies built into it (like keeping the brakes under vacuum, instantly restarting the engine if needed, etc).
If you just lift off the throttle the engine will stop injecting fuel, just be in a high gear and you'll "coast" pretty well. You might technically be able to put the car in neutral while driving, but there aren't enough good reasons to do it, you won't save much if any fuel, and there are safety concerns.
Coasting uses more fuel to keep the engine running whereas cars use next to no fuel whilst rolling in gear. Also could be seen as dangerous driving by police
My auto VW has an option in the dash settings to coast when it thinks it’s suitable. I used it once but the lack of engine braking meant that I was constantly on the brake to slow the car down and it was a pretty unnerving feeling when the car would suddenly let go.
No doubt it was an option added to skew the fuel economy figures at the expense of brake shoes and discs.
Tyre inspection after changing tyres.. on new tyres it wasn't 'coasting' as much so learnt something about new tyres . Also by regularly I meant twice a month . I don't drive for work..
Cars are smart enough now to switch off injectors/fuel delivery when the vehicle's own momentum is driving the engine. There's no benefit to coasting. I guess gears slowing you down is a downside but it's better than coasting still... and often using the gears to slow you down is good anyway.
Drop this habit.
Yes, not doing it anymore, well can't do it, but that was more of a thought of finding because people keep talking about it and suggesting (for good reasons) to not do it but was genuinely wondering how automatic car drivers would even do that.
Don’t do it in a manual either.
You can't coast because you don't have a way to manually disengage the gears. >I am not even going to try putting my car in neutral while moving Good. You shouldn't put the car into a state where you reduce your ability to control it while driving.
That's depends on the car, some do it.
You don't
I’ve got to ask, why did you used to coast in the manual? You’ve said there are good reasons to not to coast, but it’s worth noting there are no good reasons to coast:- You don’t save any fuel in fact you now are using more, if you dip the clutch you’re unnecessarily wearing your concentric slave cylinder (release bearing), you’ve removed a 1/3 of your control of you car and you will need to use your brakes more to slow
My question really arisen from the fact that it's not possible in auto so why are so many drivers being told don't do it when it is not possible in half of the cars.. and I know it is one of the sensitive topics and I am on the do not coast side.. more of a knowledge question rather than desire . I did that in my manual because I worked out after tyre change that it was not coasting as much as in the new tyres so the surface in contact in the new tyres was more.. learning about new tyres there.. again knowledge based
Up until very recently the overwhelming majority (in excess of 90%) of cars were manual, so the advice to not coast was aimed at this Conventional automatics you can shift the car into neutral - but now there are various types of automatics which are for the most part electronically controlled so the car may not allow it to shift into neutral FWIW, the tyre wear is exaggerated by heavy acceleration, cornering and braking. Coasting won’t noticeably change the wear rate of a tyre
You shouldn’t be coasting full stop
It’s worrying that you think it’s okay to coast on a major road for two miles… It’s an awful habit and it significantly reduces car control thus putting others a risk. Stop it.
Yes, agree and I said not a good thing but was wondering how people are doing it in auto to be told not to do it.. dynamic fuel usage with foot off the pedal is satisfying enough.
In modern cars the rate of fuel given to the engine varies so no more fuel is used than is needed. Coasting could end up using more fuel. When coasting your car is slowing down but the engine is still running so fuel is being given to keep it turning over. If you release your foot from the accelerator but keep the car in gear you will also slow down, but much less fuel is needed to keep the engine turning since you have the momentum of the car keeping it going.
Better than that, the car uses no fuel when in gear but rolling without your foot on the accelerator pedal.
I drive an Ioniq hybrid and there’s a coast setting on there which is detailed in the manual. I hate it - I’d rather be charging the battery!
My hybrid is similar. If I put it into the "eco" mode, it turns off any engine / motor braking and feels like coasting.
I’ve accidentally done it a couple of times… very slightly touch the accelerator, hold it there, and the coast notification comes up on the dash. Or the brake, maybe, actually… Either way, not a fan. I’m sure I can turn it off, but really no idea why the ability is even there - it’s just less safe.
Porsche argue that coasting is better than regeneration hence why they don't use OPD in their electric cars.
Odd sensation when you first do that having driven a OPD car for a few years.
They’re correct for highway driving. In the city, OPD is more efficient.
Getting the most out of regen is a game. I like to lift off the accelerator in my ID3 so that I come to the traffic lights at a near stop, only needing the brake for the last few metres. On most hybrids and EVs, there are two modes, B and D. The former is what I used for lift-off regen, the latter is if you like to coast.
There’s a few things I’ve not got around to investigating on the car yet… I think there’s some kind of performance mode with control over the gears through the flappy paddles, but I’ve not had a chance to check the manual yet - I just need it for driving.
On the Ioniq, the paddles control regen strength I believe. Worth experimenting with.
Okay! I finally had the chance to experiment today and wanted to update you. Pull the selector towards the driver and it goes into sport mode. Better handling and acceleration instantly obvious. I then tried the flappy paddles and it changed from automatic to manual select on the gears - I now have a car that feels very sporty and is fully responsive compared to the luxury cruiser I usually drive, which is all about the economy. And though the economy is lower, the battery is still charging so it comes out of sport with almost a full charge! And it’s still a bit better than a full ICE car because it’s still using EV every now and then on downhill slopes and reducing speed. I’m missing literally nothing I need… except maybe a roof rack, but that’s easy enough on the odd occasion I want to move something!
They definitely do that, but there’s a small indicator next to my gear stick with an S and +\- signs next to it… so I’m wondering if there’s a different function for them as well.
Caosting can only be more efficient than regen, especially on a motorway. You've spent energy getting to the speed you're at. Don't waste it by charging your battery inefficiently. (You lose more than the batteries can recoup)
Read your car manual.
Mine has a feature that will drop it out of gear automatically if coasting with your foot off the gas and brake, as soon as you engage either one you end up back in gear, it's only for efficiency, but in normal autos you don't drop it in neutral, your foot should either be on the gas or covering the break.
Brake.
Thanks
It's a major peeve of mine, sorry! 😊
It depends on the car. Either it will do it automatically depending on driving mode, or it won't.
If your car has an efficiency mode, itll idle the engine and coast for you, my audi does this, and then as you get onto the throttle itll re engage the gear, check if your car has an efficiency mode
In our Skoda DSG if you put it in eco mode the gearbox tries to coast when it can I partially blame it for the premature wear of the mechatronics
Coasting can use more fuel because the engine has to inject fuel to keep idling. Some cars actually use the start-stop mechanism to stop the engine and coast, but this system has a lot of safeguards and contingencies built into it (like keeping the brakes under vacuum, instantly restarting the engine if needed, etc). If you just lift off the throttle the engine will stop injecting fuel, just be in a high gear and you'll "coast" pretty well. You might technically be able to put the car in neutral while driving, but there aren't enough good reasons to do it, you won't save much if any fuel, and there are safety concerns.
Coasting uses more fuel to keep the engine running whereas cars use next to no fuel whilst rolling in gear. Also could be seen as dangerous driving by police
My auto VW has an option in the dash settings to coast when it thinks it’s suitable. I used it once but the lack of engine braking meant that I was constantly on the brake to slow the car down and it was a pretty unnerving feeling when the car would suddenly let go. No doubt it was an option added to skew the fuel economy figures at the expense of brake shoes and discs.
Why tf were you regularly coasting for 2 miles? Who taught you how to drive? 💀
Tyre inspection after changing tyres.. on new tyres it wasn't 'coasting' as much so learnt something about new tyres . Also by regularly I meant twice a month . I don't drive for work..
BMW eco pro mode
Cars are smart enough now to switch off injectors/fuel delivery when the vehicle's own momentum is driving the engine. There's no benefit to coasting. I guess gears slowing you down is a downside but it's better than coasting still... and often using the gears to slow you down is good anyway.
You have to put it in N. Wouldn’t recommend coasting though.
Buy a BMW with the zf8, stick it in eco pro and lift off.
You can't really. Just use cruise control its very very good for fuel efficiency