SE variant DSG doesn't have Drive mode selection (which is only standard on SEL and above). This seems to mean that ECO mode cannot be selected. It seems that the DSG box only uses coasting with ECO. 

 

Does anyone know if using coasting improves MPG, if so it is surprising that Drive Mode is not standard.

 

My 2020 diesel SEL has DSG and the drive mode button and using the Individual function I have saved Sport steering (heavier) and Eco for the gearbox so after pressing the start button I select the drive mode and tap Individual. Yes the coasting saves fuel judging by my 27 mile commute yesterday when the 150PS diesel reported an indicated 75.5mpg. Still on my third tank and done more than 2,000 miles at a calculated 61mpg average. Very pleased with the car and the high spec mine came with.

3 hours ago, Jase_31 said:

Does anyone know if using coasting improves MPG, if so it is surprising that Drive Mode is not standard.

 

Does anyone actually use "coasting" is there any loss in not having it available on all models? Can it be coded with VCDS?

2 minutes ago, Jase_31 said:

Does anyone actually use "coasting" is there any loss in not having it available on all models? Can it be coded with VCDS?

My virtual dash changes from say E7 to just E to tell you it has gone into neutral and the revs drop to 800rpm which is idle speed so look at your Rev counter and if you were doing 70mph on the motorway in 7th gear it drop from 1,600rpm to show you were indeed coasting.

Anyone know if "eco mode" can be coded, on models without Drive Mode Selection? Seems to be possible on "audi" so, so seems likely on the skoda.

On 17/01/2021 at 20:47, Jase_31 said:

 

Does anyone know if using coasting improves MPG, if so it is surprising that Drive Mode is not standard.

 

 

My findings when trying it:

It takes a very specific driving style to make the best use of it.  Lifting earlier than you ever thought and then gentle when getting back on the gas to let the engine catch up.  If you drive the car a you would in normal you will quickly get frustrated.  It caught me out a couple of time when I forgot I'd enabled it and had to brake harder than usual coming up to a junction.

2 hours ago, MarkyG82 said:

 

My findings when trying it:

It takes a very specific driving style to make the best use of it.  Lifting earlier than you ever thought and then gentle when getting back on the gas to let the engine catch up.  If you drive the car a you would in normal you will quickly get frustrated.  It caught me out a couple of time when I forgot I'd enabled it and had to brake harder than usual coming up to a junction.

 

On models without Drive Mode Selection (i,e up to and including SE) there is no option to select ECO mode. However on ACC, you can chose "ECO, COMFORT, NORMAL, SPORT". I thought this related to the throttle response only. i.e when adaptive cruise accelerated it picks up very slowly in ECO, and quite rapid in SPORT. However, I have tried it in ECO, and came up to slow/standing traffic. I did notice that rather than slowing down gently as usual with little braking, the car came up behind the slow/stopped car quick quickly, and then put the brakes on quite hard (It was quite disconcerting, as I felt I needed to jump on the brakes myself!, and you dont usually get this feeling)

 

Now you mention engine braking it seems quite likely this is the difference. In theory, not using ECO should reduce brake pad usage . It seems likely that ECO model on ACC, is actually running the same logic, as Drive Mode Selection would (i.e slow throttle, less engine braking )

 

 

Move DSG gearstick to N and coasting is On

Does moving from D to N whilst moving cause any issue? (or back for that matter!)

4 minutes ago, Jase_31 said:

Does moving from D to N whilst moving cause any issue? (or back for that matter!)

I would leave it in Drive as you have no way of taking effective avoiding action if you need to. As for the benefit of ECO mode, I rarely use it, after driving 280 miles driving like a saint, coasting a lot in ECO, anticipating stoppages and lifting off early. It gave a computer reading of 40 Mpg. It was boring. On the return journey I drove as normal, and lost 1 maybe 2 Mpg. Also if you lift off in Normal mode, the engine doesn't demand fuel. Savings can be made by intelligent driving and, if you can spare the time, by doing long journeys at non-peak times. Life really is too short too worry. 

The same operation, just initialled manually

 

another trick is move selector back to switch from D to S and back,

S without accelerator helps brake by engine

On 17/01/2021 at 20:47, Jase_31 said:

SE variant DSG doesn't have Drive mode selection (which is only standard on SEL and above). This seems to mean that ECO mode cannot be selected. It seems that the DSG box only uses coasting with ECO. 

 

Does anyone know if using coasting improves MPG, if so it is surprising that Drive Mode is not standard.

 

Eco mode "should" provide better economy by disengaging the DSG when not accelerating or you lift off the accelerator. I think the standstill engine idle speed might also be lower. However, as someone said earlier, it takes a lot to get used to the lack of engine braking when coasting up to roundabouts, lights etc. Unless you lift of way earlier than normal you end up arriving too fast & have to use the brakes a lot more to scrub off speed. As a result it takes a more concentration to use Eco mode than the other DSG modes. I tried using Eco mode to try & improve my fuel consumption. After 2 weeks I gave up & switched back to using D & Sport modes as it became too much hassle forward think lift off distances etc. Also, according to the instantaneous fuel consumption readout, when you lift of the accelerator in D or S mode you are not using any fuel which begs the question, what extra benefit does Eco mode actually provide other allowing you to coast going downhill or on the flat with no accelerator depression? 

I have to say I'm not a fan of Eco mode so in my book you're not missing much if you don't have it.  

 

    

Colin170CR,

 

I think you are right. When the foot is off the gas, you shouldn't be using any fuel.  The difference seems to be in hilly areas, that with each you gain a little speed that takes you up the next incline (like a roller coaster), with engine braking you gained no speed at the bottom, so you need a bit of gas to get you up the next incline. I suspect it is something that would be rarely used, and probably doesnt gain much (if any) mpg, or it would be added as standard to get better emission numbers.

@Jase_31 the search function is pretty good on Briskoda and there are various threads on ' coasting function'.   It can use less fuel and have the car emit less emissions if you are able to use it. It is as simple on some journeys having it enabled and remembering to have your toe off the accelerator pedal.     The best way to find out if it suits your journeys and driving style is to try using it.  All you need do for reducing speed is tap the accelerator or drop a gear, even with a DSG and then your car is no longer coasting.

Edited 20 January, 20215 yr by e-Roottoot

15 hours ago, MartiniB said:

Move DSG gearstick to N and coasting is On

 

This is not a good idea.... You find yourself in a situation requiring instant power and you will be left fumbling for the shifter.

16 minutes ago, Nick_H said:

 

This is not a good idea.... You find yourself in a situation requiring instant power and you will be left fumbling for the shifter.

using D->N only when red light is far away to able reach it without press accelerator,

when "stop line" is closer i use to opposite tactic -

a second or two before press brakes pedal moving DSG stick back to switch from D to S, what helps in brake by engine

Anyone else remember "gears to go, brakes to slow"

Re eco mode, you travel much further before a natural stop, so spend more time off throttle. In D mode lifting off at the same point would mean reapplying some gas to get to the junction. Hence more fuel. 

Like others i tried and didn't like feeling 'disconnected' plus ended up kissing the brakes more without really slowing down much. The engagement takes some getting used to.

ECO coasting will improve MPG marginally in certain situations. Good for downhill sections where you can gain speed without using the engine. Will also allow you to let of the throttle earlier on approach to a stop. 

 

There is a delay when getting back on throttle from coasting while the engine rev match to engage gear. If you touch the brake, it will also come out of coasting mode into gear. 

The part I did like about eco was the slow resume on cruise and the soft throttle/gear change.  I did discuss the possibility of removing the coasting with a tuner but he wasn't sure he could do it.

I do think that rather than coasting a change to the highest possible gear (or even just up one) would offer much better economy while giving semi-coasting feel.