 | Home > Puma (Tdci) > Fuel Economy on 2.4 tdci. |
 
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| LR90XS2011 Member Since: 05 Apr 2011 Location: bickenhill Posts: 3615   
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try the search function on here there are loads of threads about economy DEFENDER 90 TDCI XS,
I hope everyone is well and your land rovers make you happy |
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5th Feb 2022 7:33pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3213  
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Tyre pressures? Or perhaps dragging brakes? 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black |
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5th Feb 2022 7:34pm |
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| muddypaws Member Since: 22 Jan 2013 Location: Leicestershire Posts: 122  
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Sounds a bit low to me; don't think I've ever been below 30mpg but then I don't tow or do lots of 70mpg stints on the motorway Richard
Defender 90 SVX |
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5th Feb 2022 7:34pm |
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| Angus_Beef Member Since: 30 Apr 2015 Location: Oslo Posts: 434  
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Your numbers don't look completely crazy. I have found that depending on many variables, fuel economy can vary wildly.
My fuel economy is significantly worse on autobahns, where there is a lot of wind, heat, traffic, etc. My worst fuel economy was 13.2 L/100 in Sweden with rain, cold temps, and high winds. My best was 7.8 on Norwegian roads at 80 kph, sheltered by trees, with a moderate temperature and windows down. Weather (especially wind and temperature) are difficult to overcome. But as an example, a very good result was driving from CH to NO this October, temps in the mid 20s, AC not needed, 235/85 Nokian LT2s at 4.5 bar rear, 2.5 bar front, and the truck loaded to max GVWR. I averaged 9.36L/100 at 110 kph with a BAS 170 tune, and regular diesel. In this case, I suspect the lowered ride height from the max payload offset the increased weight. I try my best to keep the truck consistent even though it is used in a wide variety of situations and here is what I come up with:  Click image to enlarge Roaming around 🇳🇴🇨🇭 |
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7th Feb 2022 6:57pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 19611
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Grease prop UJ’s, check tyre pressures and if you don’t already start using Millers diesel additive permanently too. Diesel$ Live$ Matter. ⛽️🛢️👨🔧🧰⚙️ RED, WHITE & BOOST! 🇬🇧
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7th Feb 2022 7:19pm |
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| Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6265 
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not sure how much difference it makes but I do wear ballet shoes (
 )
I generally work on 500 miles to a tank, anything less and I feel cheated. Anything more I'm happy. from memory the most I've managed was 615 miles - 40mpg. BUT - thats trying to be frugal. 
using BP ultimate. Last edited by Caterham on 10th Feb 2022 10:12am. Edited 1 time in total |
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9th Feb 2022 11:37pm |
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| Mother superior Member Since: 05 Aug 2013 Location: Surrey Posts: 497
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Yeah, what Caterham said.....Just halve all the numbers Oh woe, oh woe
My crusty old landrover, It will not go. |
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10th Feb 2022 9:40am |
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| jpboost Member Since: 13 Apr 2021 Location: Gatwick Posts: 374 
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600 miles to a tank!!!! wow. I'm normally getting about 420 or so.
Mine's also taken a dip on mpg over the last couple of months. It's going in for an oil change/service next week, so will be interetsting to see if anything obvious is wrong. I will recheck my tyre pressures ahead of that anyway, but on reading the above am wondering if it's from leaving hte aircon on over the last couple of months to assist in keeping everything demisted. As to air-con, do people find that using it makes much difference to the mpg in their defender? In some of my older cars it used to make a noticeable difference, but my last couple of cars (bmw 330d and 5.0 Range rover) it made practically no difference at all - certainly nothing that you could identify consistently. So I'd got into the habit of just using it most of the time. In case relevant, mine's a 2.2, but imagine the questions/issues here are common to the 2.4. |
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10th Feb 2022 10:15am |
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| Leamreject Member Since: 19 Dec 2020 Location: Middle Earth - Leamington Spa Posts: 956  
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If your air con compressor is driven off the engine v pulley or serpentine belt you should notice a difference in economy, a modern vehicle air con compressor is electric so much more efficient Ride like you stole it!!
If I’m not on a bike it’s because only a 4x4 will do… 2011 2.4 Puma 90 HT |
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10th Feb 2022 10:56am |
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| jpboost Member Since: 13 Apr 2021 Location: Gatwick Posts: 374
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All of mine were driven off the pulleys.
That said, the range rover was rather thirsty anyway (12-15mpg) so, proportionately at least, the aircon wasn't really significant! |
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10th Feb 2022 11:43am |
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| Onemcs Member Since: 20 Sep 2020 Location: Hertfordshire Posts: 33
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Max I ever get is 400 ish miles to a tank.
It’s remapped and I thought that was good! |
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10th Feb 2022 7:26pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 16894 
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I work on 400 miles to the tank as an average, less if towing, and less if a long motorway (or similar road where sustained higher speeds can be maintained) run is involved.
That's a remapped DC usually running around 2.75 tonnes GVW with 255/85 mud tyres and a roofrack. What really hurts is that at 152 pence per litre it is now £100 to fill the tank, so we've reached the 25p per mile point.  |
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10th Feb 2022 8:05pm |
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| jpboost Member Since: 13 Apr 2021 Location: Gatwick Posts: 374
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Yes, it really does start to show the real cost of it all.
That said, my L322 range rover was 100litres of unleaded to fill and I only got 220-240 miles to a tank. I miss a few things about that car, but not the fuel!!! |
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10th Feb 2022 8:16pm |
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| Stacey007 Member Since: 25 Sep 2015 Location: Cheshire Posts: 3696
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Hello
Over the 6 years or so with ours it seems to do between 29 / 35 with an average of around 32mpg best I think was around 38 mpg. Seems to do the same full of camping stuff / bike etc than it does empty. Its a 110 remapped. Most of my driving is A / B Roads a though big European trips also (at 75 / 80) it does around 26... but on the toll roads abroad you want to get to places. In the UK I tend to cruise at 60mph even on the motorways. |
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12th Feb 2022 4:55pm |
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