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XC60, Diesel 2400cm3, 2010 poor fuel economy?

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Old Nov 15th, 2017, 15:33   #11
volvo s60 2001
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Originally Posted by wimorrison View Post
It is the 205 variant that I have been talking about and even on an urban road 35mpg was totally unachievable let alone driving through London.

Also the on board mpg display was hopelessly inaccurate as it suggested 37mpg (from memory) but that actual brim to brim was much lower.

If you get 35mpg brim to brim then you are very, very lucky


Yes I am very lucky and happy with my economy 😉.

Could it be a problems with the brakes or bearing!?

Can you do a test with the cruise control set to 30mph and watching the instantaneous fuel consumption for 1 or 2 minutes if you can on clear ( and flat if possible) road and tell what is the minimum and maximum value?
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Old Nov 15th, 2017, 18:08   #12
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I can’t as I sold that car a couple of year ago - I can tell you what a 215 would provide. The issue with the engine, especially on an auto was and is not when you are driving a steady speed as consumption drops to an absolute minimum under those circumstances in any car, it is when you are accelerating as you loose a lot to the fluid flywheel - significantly more at lower speeds that higher speeds and this is what happens in city driving.
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Old Nov 15th, 2017, 19:24   #13
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Originally Posted by wimorrison View Post
I can’t as I sold that car a couple of year ago - I can tell you what a 215 would provide. The issue with the engine, especially on an auto was and is not when you are driving a steady speed as consumption drops to an absolute minimum under those circumstances in any car, it is when you are accelerating as you loose a lot to the fluid flywheel - significantly more at lower speeds that higher speeds and this is what happens in city driving.



Sorry for the misunderstanding, but I quoted your post in my previous one and my post was actually for the OP. If he can do the test and give us some idea of the figures. Also while at speed he can put it in neutral ( it's possible on automatic) and see if the car lose speed quicker than normal, then this will mean something is wrong with the wheels or the brakes.
Regarding the acceleration that is true, but I do it every 30sec to 1min here 😉.
And my foot is quite heavy ( number 11) 😄
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Old Nov 17th, 2017, 00:05   #14
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I get 13 L/100km, i.e., 18 mpg in the city. I don't race around, don't step on the gas when the light turns to green. The best I got in the city was 11.8 L/100 km, 20 mpg.

Is that acceptable for this model and year?

I took the car to two shops (I got it two years ago, used) and I got the same answer from both: they see nothing wrong with the car, although they couldn't tell me what's the acceptable consumption.

Any ideas?
Your mpg figures seemed *really* low to me so I checked a couple of online convertors which both gave the following:
13 l/km is ~ 21.7 UK mpg
11.8 l/km is ~ 23.9 UK mpg

I never got to low 20s with my XC90 D5 but I imagine it could be possible in pure city driving.
One thing not already mentioned is low tyre pressure will reduce mpg.

Good luck.
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Old Nov 17th, 2017, 06:44   #15
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I have your beast and I have never manually measured fuel consumption (brimming the tank etc) I just rely on the computer.
But with a combination of hard autobahn driving and stop & go town driving I have never seen it rise above 9l/100 km
I usually cruise at 8.5l/100km and if I am really frugal cruising at 120km/h I can get 7.5 l/100km.

Yours does seem excessively high.
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