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Lag/hesitance + fuel economy, when does it improve?
wobble44
 

Posts: 3
Joined: Sep 2012
Location: Australia
Post: #1
Lag/hesitance + fuel economy, when does it improve?

I have read all the threads regarding the lag/hesitance at low revs - especially with the SD4 Auto box, and the terrible fuel economy as the engine beds in.

My question is...the dealer has said these things will improve as you go, apparently a major difference in economy at around 10-20,000 k's. What are others thoughts?

Also that the lag will improve as the learning works out your style. Well after 600kms my style is.....

push loud pedal to the floor at the lights.....no response. release. push again. no response..

How can i teach the computer i want 1st/2nd gear???? Any ideas on how to teach the ECU to get rid of the lag?

90% of my driving is city, with lots of traffic lights, but not much traffic, so i want as much acceleration from the box as i can. My old vehicle was a Merc ML270 cdi, heavier with much less power but when I pressed the accelerator hard it still moved off in 1st into 2nd...

cheers!
16-10-2012 07:45am
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Barneyridge
 

Posts: 715
Joined: Aug 2011
Location: Sydney
Post: #2
RE: Lag/hesitance + fuel economy, when does it improve?

Mine has 15,000 Km's and the fuel economy is still the same, currently averaging 9.2l/100 km in city driving. I have got 5.7 on a trip fom Mittagong to Sylvania only a couple of weeks ago.

Pure TD4, Fiji, Auto, Pan Roof + Extras - Delivered Very Happy
(This post was last modified: 16-10-2012 08:18am by Barneyridge.)
16-10-2012 08:17am
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XFullFatTim
Bat wielding forum enforcer

Posts: 9,295
Joined: Oct 2010
Location: Somewhere between here and there.
Post: #3
RE: Lag/hesitance + fuel economy, when does it improve?

Your dealer doesn't know what he is talking about! Things will not improve by any appreciable amount.
13000 miles on the odo and I don't expect to see any improvement over the normal 35-37mpg in local driving any time soon.

A Pangea Green New Defender 110 First Edition is now sitting on my drive alongside British Racing Green Electric Mini Cooper SE Level 3. After 21 years in my hands my TDI300 90 was handed on to the next custodian on 15 July 2022.
16-10-2012 09:22am
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PhilSkill
 

Posts: 3,880
Joined: Jun 2011
Location: Warwickshire
Post: #4
RE: Lag/hesitance + fuel economy, when does it improve?

9000 miles so far and the improvement has been 33mpg to 37mpg... not really expecting much more improvement either. Maybe an mpg at most, driving style and conditions has more to do with that... no lag on the Manual Very Happy But I have felt the lag when driving an Auto at an LRE day with 25000miles on the clock.

MY12 Fuji Dynamic SD4 Manual, Pano Roof, Electric Tailgate with own Close module
[Image: 124529.png][Image: 1004887.png]
16-10-2012 02:16pm
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Daigriff
 

Posts: 655
Joined: Apr 2011
Location: North Wales
Post: #5
RE: Lag/hesitance + fuel economy, when does it improve?

31 to 33 mpg...not great 8000 miles in. I still get the lag as well which is frustrating...and potentially dangerous.

Arrived 16th December 2011: 5 door Prestige SD4 auto in Barolo black with ambience interior, pano roof, privacy and 20" style 6 alloys.Very Happy
16-10-2012 06:09pm
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WorldTraveler
 

Posts: 239
Joined: Oct 2011
Location: Newcastle Upn Tyne/The World
Post: #6
RE: Lag/hesitance + fuel economy, when does it improve?

35mpg...after nearly 8000 miles... not great, but not alot we can do about it !

Delivered 31st March 2012
Pure, 5 Door, TD4, Manual, Firenze Red, Tech Pack, Front Fogs, Xenon, Pano Roof

Track Consumption Using The Site Below
[Image: 117709.png]
17-10-2012 10:28am
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XFullFatTim
Bat wielding forum enforcer

Posts: 9,295
Joined: Oct 2010
Location: Somewhere between here and there.
Post: #7
RE: Lag/hesitance + fuel economy, when does it improve?

You can sell your car and move to another make that can offer cars that get somewhat better consumption.
I have been monitoring the averages per make on Fuelly and now know that unless Land Rover improves the fuel consumption to something within 5% of the Govt claimed I will not be returning to the brand for my next car.

A Pangea Green New Defender 110 First Edition is now sitting on my drive alongside British Racing Green Electric Mini Cooper SE Level 3. After 21 years in my hands my TDI300 90 was handed on to the next custodian on 15 July 2022.
(This post was last modified: 17-10-2012 12:47pm by XFullFatTim.)
17-10-2012 12:46pm
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j7david
 

Posts: 152
Joined: Jul 2011
Location: Kenya, East Africa
Post: #8
RE: Lag/hesitance + fuel economy, when does it improve?

MPG improved for me after 7000 miles but hasn't changed now up to 12000 miles.

Dynamic SD4 AUTO

Graph attached - blue dots are brim-to-brim fill-ups (i.e. tank mpg); red line is cumulative mpg.

   

(preview not working so let's hope it works on the forum)
(This post was last modified: 17-10-2012 04:51pm by j7david.)
17-10-2012 04:51pm
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PhilSkill
 

Posts: 3,880
Joined: Jun 2011
Location: Warwickshire
Post: #9
RE: Lag/hesitance + fuel economy, when does it improve?

Thumbs Up another graph man... yep 1-2mpg lower than the Manual, looks bang on.

The engines are finely tuned to get the best in the Standard MPG tests, to be fair to Land Rover they can only publish the official test figures, the fault is with the test it should be more representative so the manufacturers tune their cars to be most efficient to the owners not to a simple test sequence so they can publish great figures no-one will ever achieve.

MY12 Fuji Dynamic SD4 Manual, Pano Roof, Electric Tailgate with own Close module
[Image: 124529.png][Image: 1004887.png]
17-10-2012 05:14pm
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cjfp
 

Posts: 2,917
Joined: Nov 2010
Location: Hampshire
Post: #10
RE: Lag/hesitance + fuel economy, when does it improve?

I was going to comment that you two should have a dinner date but didn't want to assume that you would be each others' type. At least we can be sure that you could draw up a model to split the bill Laughing

Pure 3dr SD4 Tech Man ; Firenze Red ; 19" Style 3 ; Pano ; Ebony / Ivory Int ; Auto dim rear view ; 2 seats ; Park Aid - Rear cam ; Ext. folding mirrors ; Adap Xenon ; Fogs ; Mud Flaps ; Side Steps - Rec'd 28/12/11 - Sadly going 6/6/14 - Gone, now running BMW X6
(This post was last modified: 17-10-2012 05:23pm by cjfp.)
17-10-2012 05:23pm
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