Diesel isn’t dead for me yet. Enjoyed an 8 day trip to Orkney and Shetland including 3 ferry hops.

 

 

On 12/06/2022 at 09:12, roottoot said:

ACT / Cylinder deactivation COD if it is an AUDI is fine in a Kodiaq because to work you have to be off the accelerator so rolling along, going down hill etc.  So the weight of a Kodiaq helps with that.  Just like Coasting it takes a driver using the system effectively.  Roads do go down and not just up. 

 

On 11/06/2022 at 23:14, PoloGaz said:

i have tried other approaches such as those suggested; to keep in lower gears so cylinder deactivation comes into play...

 

 

 

 

COD can activate when driving stready at 70mph along a motorway. If you're gentle on the pedal, it'll even work maintaining same speed going up a very slight incline!  When descending a hill with my foot off the accelerator, the 2cyl indicator 'eco' on my digital dash actually goes out. ( with the instantaneous display reading 300mpg  ).

 

I'm now on my 3rd COD VWgroup engine - even ran a 2017 1.4tsi Skoda without COD whilst also owning a 2017 1.4tsi SEAT with for about a few years. I found no difference in economy. And why should I,  COD is only ever activated for very short periods of time - must be a fraction of a percent of the whole journey. You'd never notice it.

 

There's a simple test we owners ( so that excludes Root ) can carry out to see for themselves how COD works.

 

If driving a manual car with warm engine then as long as you're in Normal mode, if you drive along a level road at a constant 30mph in 3rd gear, the display should indicate you're running on 2cyl. Keeping the speed constant, change down to fourth and you should notice the engine returns to 4cyl mode.  PoloGaz - when you say others suggest keeping in lower gears for deactivation to work - sounds to me like they don't know what they're talking about. Do any of them drive cars with COD?  Same holds true for Automatic - whatever gear your car is in at a set speed, when you see the 2cyl mode, flick the paddle down a gear and you'll be back on 4cyls.

 

COD does not like low revs and that's why those who set their car to run in ECO mode rarely see 2cylinder deactivation - ECO mode changes down gears early which means the engine labours more hence COD doesn't kick in.

 

That begs another question tho -  what's more economical at a set speed - an engine running in 2cyl mode or slighly labouring engine running in a lower gear?

 

PoloGaz - Set the display to instantaneous mpg and do the above test. Whats the higher mpg at 30mpg - 2cyl mode or 4cyl mode?  It proves what those others said isn't true.  I can only assume COD exists because it produces less emissions, but if anyone is claiming you'll save fuel as a result...  who knows. might be the start of a new VW petrolgate. 

 

 

Edited 13 June, 20223 yr by kodiaqsportline

@kodiaqsportline So as you like to remind everyone i do not own a Skoda, or a lovely pair of Skoda like you do. 

I do own a Skoda though.  Not with Active Cylinder Technology, and i never have owned one with it.

 

  Can you remind me what your forum name used to be before you took a break?

Go try to wind up another. 

 

I get to drive the cars, only driven 2 pedal cars since the 70's,

drove ACT & COD when they were first launched at demo days,  and that was before you even seemed to know about DSG's or coasting etc when you had your previous name on the forum.

That was when you and all the rest of us were armchair experts, just as we all still are, some of us even drive and hypermile or try to. 

 

http://briskoda.net/forums/topic/401292-14-tsi-act-engine

http://briskoda.net/forums/topic/442500-15tsi-act

 

 

Edited 13 June, 20223 yr by roottoot

3 hours ago, kodiaqsportline said:

COD does not like low revs and that's why those who set their car to run in ECO mode rarely see 2cylinder deactivation - ECO mode changes down gears early which means the engine labours more hence COD doesn't kick in.

 

I drove my 1.4TSi Kodiaq in ECO most of the time, and regularly saw the ACT kick in (and 'eco' on the dashboard). You just need to be light-footed on the gas peddle. I also got 45-50mpg out of it on long runs.

 

And ECO changes up gears early, but I'm sure that was just a typo 😉.

On 13/06/2022 at 15:11, kodiaqsportline said:

 

 

 

COD can activate when driving stready at 70mph along a motorway. If you're gentle on the pedal, it'll even work maintaining same speed going up a very slight incline!  When descending a hill with my foot off the accelerator, the 2cyl indicator 'eco' on my digital dash actually goes out. ( with the instantaneous display reading 300mpg  ).

 

I'm now on my 3rd COD VWgroup engine - even ran a 2017 1.4tsi Skoda without COD whilst also owning a 2017 1.4tsi SEAT with for about a few years. I found no difference in economy. And why should I,  COD is only ever activated for very short periods of time - must be a fraction of a percent of the whole journey. You'd never notice it.

 

There's a simple test we owners ( so that excludes Root ) can carry out to see for themselves how COD works.

 

If driving a manual car with warm engine then as long as you're in Normal mode, if you drive along a level road at a constant 30mph in 3rd gear, the display should indicate you're running on 2cyl. Keeping the speed constant, change down to fourth and you should notice the engine returns to 4cyl mode.  PoloGaz - when you say others suggest keeping in lower gears for deactivation to work - sounds to me like they don't know what they're talking about. Do any of them drive cars with COD?  Same holds true for Automatic - whatever gear your car is in at a set speed, when you see the 2cyl mode, flick the paddle down a gear and you'll be back on 4cyls.

 

COD does not like low revs and that's why those who set their car to run in ECO mode rarely see 2cylinder deactivation - ECO mode changes down gears early which means the engine labours more hence COD doesn't kick in.

 

That begs another question tho -  what's more economical at a set speed - an engine running in 2cyl mode or slighly labouring engine running in a lower gear?

 

PoloGaz - Set the display to instantaneous mpg and do the above test. Whats the higher mpg at 30mpg - 2cyl mode or 4cyl mode?  It proves what those others said isn't true.  I can only assume COD exists because it produces less emissions, but if anyone is claiming you'll save fuel as a result...  who knows. might be the start of a new VW petrolgate. 

 

 

having done said test on a few occasions over the years as far as I could tell it used more fuel in lower gears while in dipping in-and-out of 2 cyl mode compared with 4 cylinder mode in higher gear. 2 cylinder mode is activated way less in my kodiaq than in the 1.4 Leon ST I had before it. You could moreorless drive it continuously in 2 cyl mode unless you came to a hill

 

I’m not saying it doesn’t come on. But it is never on for a sustained length of time like it was on the Leon nor does it seem to provide the mpg benefit. You are the first person to call it out as a possible gimmick that I’ve seen. It may have provided a greater benefit on the 1.4 which I believe to be a less efficient engine, possibly due to the 1.5 employing lower friction components

 

 

 

 

11 hours ago, PoloGaz said:

having done said test on a few occasions over the years as far as I could tell it used more fuel in lower gears while in dipping in-and-out of 2 cyl mode compared with 4 cylinder mode in higher gear. 2 cylinder mode is activated way less in my kodiaq than in the 1.4 Leon ST I had before it. You could moreorless drive it continuously in 2 cyl mode unless you came to a hill

 

I’m not saying it doesn’t come on. But it is never on for a sustained length of time like it was on the Leon nor does it seem to provide the mpg benefit. You are the first person to call it out as a possible gimmick that I’ve seen. It may have provided a greater benefit on the 1.4 which I believe to be a less efficient engine, possibly due to the 1.5 employing lower friction components

 

The Kodiaq is a heavy car, it weighs 1.6 tonnes, (nearer 1.7t with a driver in it, or 2.3t fully loaded).   Do you really think 2 cylinder mode (effectively a 750cc engine) is going to be happy carrying that.   The brochure has kerb weight with driver as 1666-1752kg depending on options

 

A Seat Leon estate 1.5 tsi DSG weighs (per brochure with driver) 1424kg 

 

So for the Kodiaq effectively got the equivalent of 9-12 25kg bags of sand or cement as deadweight being carried around all the time.  If you were worried about fuel consumption why did you choose such a lardbutt vehicle 

 

 

ACT / Active Cylinder Technology / COD / Cylinder on demand moved on to all 4 cylinders shutting down on vehicles rolling along, coming to a halt, tied in with GPS and the vehicle knowing the terrain etc.

So that if to be counted as Zero Cubic Capacity must be magic, or just how the technology evolved.

The Bentley Engines were shutting down half their cylinders but then they started off with 12. 

 

The Audi 8 Cylinders and a diesel.     Maybe it is all for the WLTP / RDE2 but then that is how things roll now.

Then there is Mild Hybrid and Plug in Hybrid and the additional boost from the motors. That will eventually reach the Skoda SUV's/ Fat lumps.

 

 

 

 

 

 

 

 

 

 

 

Edited 15 June, 20223 yr by roottoot

3 hours ago, SurreyJohn said:

The Kodiaq is a heavy car, it weighs 1.6 tonnes, (nearer 1.7t with a driver in it, or 2.3t fully loaded).   Do you really think 2 cylinder mode (effectively a 750cc engine) is going to be happy carrying that.   The brochure has kerb weight with driver as 1666-1752kg depending on options

 

A Seat Leon estate 1.5 tsi DSG weighs (per brochure with driver) 1424kg 

 

So for the Kodiaq effectively got the equivalent of 9-12 25kg bags of sand or cement as deadweight being carried around all the time.  If you were worried about fuel consumption why did you choose such a lardbutt vehicle 

 

 

Short trip taking Mrs R to hairdresser this morning , 40.9 mpg indicated. 
This is in normal mode with eco 2 cylinder mode activated almost from start and for quite a bit of the journey. Also the Kodiaq’s weight has an advantage , as it surprising how far you can maintain speed coasting when you lift off the accelerator.

The post about running on 2 cylinders being like only having 750 cc seems to not be considering that an 150 ps vehicle just running along and the drivers foot light on the pedal might not even require 75 ps to keep it moving at what ever speed quite happily.

A 245 ps or a 190 / 150 ps Kodiaq in convoy might all need as little or even less than 75 ps when the engine is not under load.

2 hours ago, roottoot said:

The post about running on 2 cylinders being like only having 750 cc seems to not be considering that an 150 ps vehicle just running along and the drivers foot light on the pedal might not even require 75 ps to keep it moving at what ever speed quite happily.

A 245 ps or a 190 / 150 ps Kodiaq in convoy might all need as little or even less than 75 ps when the engine is not under load.

Exactly. My Kodiaq has the digital dash with the whimsical and probably totally inaccurate kw gauge, which normally indicates in the 10-20kw range (14-27hp approx.) or less @ 70 mph on the A1.

Edited 15 June, 20223 yr by Kenny R

14 hours ago, SurreyJohn said:

The Kodiaq is a heavy car, it weighs 1.6 tonnes, (nearer 1.7t with a driver in it, or 2.3t fully loaded).   Do you really think 2 cylinder mode (effectively a 750cc engine) is going to be happy carrying that.   The brochure has kerb weight with driver as 1666-1752kg depending on options

 

A Seat Leon estate 1.5 tsi DSG weighs (per brochure with driver) 1424kg 

 

So for the Kodiaq effectively got the equivalent of 9-12 25kg bags of sand or cement as deadweight being carried around all the time.  If you were worried about fuel consumption why did you choose such a lardbutt vehicle 

 

 

 

Needed 7 seats for various reasons. Elderly parents; kids; dog. Would have gone for the TDI but at the time of ordering, it was £50 a month more expensive in tax (it’s a company car)

 

At the time I thought I’d never save £50 a month on fuel, perhaps now with such crazy fuel prices I may have done!

Mine is getting slightly better, we live in Belfast and did a London trip last week.. it did 40mpg on the way down.. 397 in a trip with two stops.. did about 38mpg on the way home upto Liverpool.. this was loaded with 5 people, luggage and a large roofbox.. 

1 hour ago, technics100 said:

Mine is getting slightly better, we live in Belfast and did a London trip last week.. it did 40mpg on the way down.. 397 in a trip with two stops.. did about 38mpg on the way home upto Liverpool.. this was loaded with 5 people, luggage and a large roofbox.. 

 

That's about similar to what we get going from Sheffield to Belfast fully loaded from a 1.4TSi.

Gloucester to the Lake District yesterday - 43mpg in the VRS. You’d hope for at least that in a 1.4 or 1.5, wouldn’t you?

 

And that was 2 people, dog in his crate, and bike on the tow bar carrier.

1 hour ago, Yogi-Bear said:

Gloucester to the Lake District yesterday - 43mpg in the VRS. You’d hope for at least that in a 1.4 or 1.5, wouldn’t you?

 

And that was 2 people, dog in his crate, and bike on the tow bar carrier.

 

Not necessarily no - it all depends on power output, drivetrain losses, gearing and other factors.

 

Smaller engined cars are not necessarily more economical.