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DSG - Another Beginner’s Question

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Apologies if I don’t respond quickly, but I’m over in the Lake District in my camper until after Christmas and the campsite WiFi is pants.

 

Since getting the car, I’ve mostly used the gearbox in drive mode (D) apart from a few steep downhills, where I pushed it across to ‘manual’  to hold a gear longer for the engine braking. Just before I came away, I pulled the lever from ‘D’ back to ‘S’ to select sport mode and it worked exactly as I expected, extending the rev range before changing up a gear, allowing better acceleration.

 

Once sport mode is selected, is there an easy way of deselecting it ?  I thought pushing the lever forward once, would take it back in to drive ‘D’, but it took the car in to neutral. I could change it back to drive mode, by pushing a dash button and going into the ‘Infotainment’ screen and selecting normal drive, but I’d prefer to do it from the gear change.

 

I’ve had a couple of VW Touaregs with automatic gearboxes, but I can’t for the life of me remember how I used to get back to ‘Drive’ from ‘Sport’.

Pull lever again backwards and it goes back to D. 

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I knew it would be something really simple - Thanks !

3 hours ago, Walterzkoda said:

I thought pushing the lever forward once, would take it back in to drive ‘D’, but it took the car in to neutral.

That's what happens when the gearbox is in manual mode (moving the lever initially to the left) prior to going forwards/backwards to change gear yourself.

I leave my DSG in Auto pretty much all the time but pulling the lever back for Sport Mode is so handy. I use this especially when joining the motorway on a sliproad, to get up to speed quickly. Then pull it back again and I'm in cruising "Magic Carpet" Eco mode again with coasting in neutral enabled.

^^^ Best not confuse even more, 'Costing function' has the DSG disengage the gears and the Car Coasting, 

you do not put the shifter in 'Neutral' to get Coasting Function.    What some might do is another matter.

7 hours ago, Lingnoi said:

I leave my DSG in Auto pretty much all the time but pulling the lever back for Sport Mode is so handy. I use this especially when joining the motorway on a sliproad, to get up to speed quickly. Then pull it back again and I'm in cruising "Magic Carpet" Eco mode again with coasting in neutral enabled.

Recently I use sport mode rare because it revs the engine way to much in city on short sprints, kick down in D does the job most of the time. Eco mode I tried once and I don't see the point of coasting in neutral. 

I rarely use Sport or Eco. The only time I use Sport is on a long distance drive (>75 mile on dual carriageway or motorway) and Eco if I'm running really low on fuel. 

 

Otherwise it's D all day long.

I have been running mine on Eco and thought the MPG was pants, now running it in Normal and it returning much better MPG. I am thinking that by getting up to speed quicker, results in the better MPG. (My 16 plate manual 150 scout, was returning 55 to the gallon, the 19 plate DSG 184 scout is struggling to get around 45!!!)

1 hour ago, rogerdyer said:

My 16 plate manual 150 scout, was returning 55 to the gallon, the 19 plate DSG 184 scout is struggling to get around 45!!!

 

Wow, that is quite a difference.

 

How many miles has the new Scout got on it? Do you think it'll improve or is there always likely to be a 10mpg price to pay for the extra 34bhp and DSG?

 

Our 2016 150PS TDI manual Scout could also achieve 55mpg on a longer run.

On 20/12/2019 at 11:43, Lingnoi said:

I leave my DSG in Auto pretty much all the time but pulling the lever back for Sport Mode is so handy. I use this especially when joining the motorway on a sliproad, to get up to speed quickly. Then pull it back again and I'm in cruising "Magic Carpet" Eco mode again with coasting in neutral enabled.

That is pretty much how I use mine.

 

4 hours ago, rogerdyer said:

(My 16 plate manual 150 scout, was returning 55 to the gallon, the 19 plate DSG 184 scout is struggling to get around 45!!!)

Driving back from Twickenham to Norwich last Sunday afternoon I got an average of 50.1 mpg in my 65 plate DSG 184 Scout which has done about 33,000 miles. I completed the 127 mile journey in 2 hours 50 minutes and was keeping up with most of the fastest traffic on the motorways and dual carriageways. The journey included a substantial section of South and North Circular from Richmond to the A1M, motorway to just beyond Stevenage, a mixture of dual and single carriageways A505 to near Newmarket, then dual carriageway A14 and A11 to Norwich.

 

I was pleased to get better than 50 mpg which I don't see very often. I once managed an average 60 mpg on a trip from near Fort William to Glenfinnan, but have never seen anything near that before or since.

 

The DSG in my 65 plate car is 6 speed whereas the later DSGs are 7 speed, and I understand the later cars need adblue, unlike mine. Not sure how these things affect fuel consumption, but would expect the later cars to be better.

 

9 hours ago, silver1011 said:

My 16 plate manual 150 scout, was returning 55 to the gallon, the 19 plate DSG 184 scout is struggling to get around 45!!!

 

5 hours ago, OldBoyScout said:

Not sure how these things affect fuel consumption, but would expect the later cars to be better.

 

As I and many others have said before, the DSG is extremely  sensitive to throttle movement. In 'D' You control a DSG gearbox behaviour with the throttle more than anything else.

 

The DSG reacts to the amount and speed you depress the throttle as how you want to drive ( 'driving style' ). It then changes gear accordingly. When they say it matches your 'driving style' it does not mean it learns your last day/week/month's driving, it looks at how you are using the throttle on an instantaneous basis.

 

Some people can match the need with the throttle very carefully, whereas some just constantly mash the throttle and back off. The DSG reacts accordingly and with the latter senario it is up and down the box to try and please the throttle mashing.

 

I have had a constant 10mpg difference between drivers even though they change regularly between machines they drive. Consumption follows the driver not the vehicle, and more so on a DSG

 

 

15 minutes ago, flybynite said:

Consumption follows the driver not the vehicle, and more so on a DSG

So if I moved from a 65 plate car to a 19 plate would I get better mpg due to the extra gear and/or the adblue?

11 hours ago, silver1011 said:

 

Wow, that is quite a difference.

 

How many miles has the new Scout got on it? Do you think it'll improve or is there always likely to be a 10mpg price to pay for the extra 34bhp and DSG?

 

Our 2016 150PS TDI manual Scout could also achieve 55mpg on a longer run.

Just gone past 7k on the new one, I am hoping it will improve, I know it was better on the old one after more mileage, but can't remember how many miles that was at. Only just started to see what it's like in "normal" mode, but seems to be looking better already.....time will tell.

12 minutes ago, OldBoyScout said:

So if I moved from a 65 plate car to a 19 plate would I get better mpg due to the extra gear and/or the adblue?

 

I don't think so, I stand to be corrected but I cannot see how AdBlue would change consumption of diesel as it is injected downstream of combustion.

 

The DQ380 is still wet clutch and would have similar final drive. Extra gear would help a bit  but not sure I feel stuck with 6.

 

Higher power diesels tend to generate more soot and will therefore going from 150 to 184 is likely to regen more often and use fuel to do it if it doesn't get ideal conditions.

Not quite sure how you managed to quote me as saying something I didn't...

 

image.thumb.png.38ee9a4cdccdf545431257c12cc60b69.png

9 minutes ago, flybynite said:

Higher power diesels tend to generate more soot and will therefore going from 150 to 184 is likely to regen more often and use fuel to do it if it doesn't get ideal conditions.

I have serious doubts when it comes to encountering ideal conditions for a regen. Driving down from Norwich to Twickenham on Saturday and back again on Sunday I would have expected ideal conditions would occur at some point. However at the end of a 20 mile round trip to Wroxham on Monday evening I found that an active regen was in progress as I arrived back home. A similar thing happened in October a couple of days after a long trip to Swanage and back.

 

1 hour ago, flybynite said:

As I and many others have said before, the DSG is extremely  sensitive to throttle movement. In 'D' You control a DSG gearbox behaviour with the throttle more than anything else.

 

The DSG reacts to the amount and speed you depress the throttle as how you want to drive ( 'driving style' ). It then changes gear accordingly. When they say it matches your 'driving style' it does not mean it learns your last day/week/month's driving, it looks at how you are using the throttle on an instantaneous basis.

 

All valid points, but in this example we're talking about someone who moved from a manual Scout to a DSG Scout.

 

It is fair to assume that if the adverse effect on fuel economy was purely down to the 'mashing of the throttle' then the same driving characteristics would have been an influence on the fuel consumption of the previous car, making the comparison relatively realistic.

 

 

 

 

@OldBoyScout

Fort William to Glenfinnan is under 20 miles each way and if the engine is not taking long to warm up the road is ideal for getting excellent economy because basically flat following a loch side.

There are ups and downs, as you know if you cycle it, but they even out as what goes up must come down.

I wonder when the car showed an average 60 mpg if 4.546 litres would be all the car would use if doing the trip back and fore and back again. so 20 miles times 3.

 

Roads just perfect for your best MPG's or maybe your very worst... Depends on weather, traffic and if you keep to the speed limit.

 

 

Edited by Roottootemoot

10 minutes ago, silver1011 said:

All valid points, but in this example we're talking about someone who moved from a manual Scout to a DSG Scout.

 

It is fair to assume that if the adverse effect on fuel economy was purely down to the 'mashing of the throttle' then the same driving characteristics would have been an influence on the fuel consumption of the previous car, making the comparison relatively realistic.

I would agree with all of that and would think that the adverse effect on fuel economy was due more to the extra bhp than to the difference between manual and DSG. I remember some years ago Top Gear did a comparison between a BMW M3 and a Prius. The BMW closely followed the Prius round a test track meaning that the speeds and acceleration of both cars was more or less the same. Under these conditions the BMW was found to be more economical than the Prius, but it would be fair to assume that the BMW would have used more fuel if the driver had been given a free rein. Not sure how clear this is, but what I am trying to say is that that the more powerful car may tend to use more fuel because the driver will tend to make use of the extra power available.

 

4 minutes ago, Roottootemoot said:

Fort William to Glenfinnan is under 20 miles each way and if the engine is not taking long to warm up the road is ideal for getting excellent economy because basically flat following a loch side.

There are ups and downs, as you know if you cycle it, but they even out as what goes up must come down.

I wonder when the car showed an average 60 mpg if 4.546 litres would be all the car would use if doing the trip back and fore and back again. so 20 miles times 3.

I have done that route many times over the last few years and have never before or since seen anything close to 60 mpg. Also the terrain round here in Norfolk is pretty flat, and I haven't seen the like round here either. However I have seen upper 50s with my MK2 manual TDI 140 which is supposed to be slightly less economical than my Scout according to the official figures.

 

 

I used to go down to RPI Engineering.

Pretty flat. road cambers and surfaces pretty odd IMO.

Undulating highland roads in Scotland really are good for hypermiling or just economy if speed carries you up and over and foot is off the accelerator going back down.

Edited by Roottootemoot

2 hours ago, silver1011 said:

Not quite sure how you managed to quote me as saying something I didn't...

 

No Idea either, but I may have highlighted the text you quoted and clicked "quote selection". It took it as your text not the one you quoted. I should have found the original text that you quoted. Obviously not as clever as I thought. :doh:

 

2 hours ago, silver1011 said:

All valid points, but in this example we're talking about someone who moved from a manual Scout to a DSG Scout.

 

It is fair to assume that if the adverse effect on fuel economy was purely down to the 'mashing of the throttle' then the same driving characteristics would have been an influence on the fuel consumption of the previous car, making the comparison relatively realistic.

 

No, the point I was trying (obviously unsuccessfully) to make is that there are some driving styles that will have little effect on a manual but will have a DSG going up and down the box revving its nuts off.

 

Mash the throttle at low rpm in a manual and it will accelerate slowly until it gets into the torque band at which point you may back off. Same gear

 

Do that in a DSG it will drop a gear, possibly two, nearly redline changing up as you go, then as you back off it changes up another gear to coast needing to change down again as you come back on the throttle. Going through a lot of fuel in the process.

 

I counted 17 DSG changes by one driver that I could do in 2, using nothing but throttle, same empty stretch of road, same empty van, same speed (up to the 60 limit), same conditions. Struggled to need more than 6 purposely being ham-footed. Go figure.

 

DSG does not work with diesel very well if throttled hard as it holds gears in the diesel way past their best. Light throttle changes up earlier down later making the most of the torque of a diesel.

I get that, as mentioned earlier you raise some valid points.

 

I am assuming that the member I was asking the question to originally isn't driving their new Scout much, if at all differently to their old Scout. Sure, the gearbox is different, but this doesn't suddenly adversely affect their throttle inputs.

 

So, it is fair to assume that the difference in fuel economy isn't related to your theory, and therefore isn't necessarily applicable to this example / thread.

5 hours ago, Roottootemoot said:

Roads just perfect for your best MPG's or maybe your very worst... Depends on weather, traffic and if you keep to the speed limit.

Nice video George, but it seems to skip the section I was referring to, jumping from north of Glencoe to the Skye Bridge.

 

5 hours ago, Roottootemoot said:

Pretty flat. road cambers and surfaces pretty odd IMO.

There is an expression "normal for Norfolk" that seems to cover a multitude of oddities.

 

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