Citroen Xsara Picasso (2000 - 2010) - 01 2.0 HDI Fuel consumption

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Sat 25 Apr 2009 10:28
01 2.0 HDI Fuel consumption - Bluesky
The fuel consumption of my 2.0 HDI seams excessive. Best fule consumption I've acheived on a combined cycle (300 miles with aprox 60 non motorway) is about 47 mpg. Typically on the urban cycle it acheives around 42 mpg but more recently that has dropped to 36!

It did have a 2 week period last September when, despite being on the usual trips, it switched to 60 mpg and then dropped back to 42 again.

I'm always light footed, and never exceed the speed limits. The car has covered 94K but the fuel consumption was the same when I aquired it at 52K. The measurements have been take over individual fill-ups (larger error) and a few cummulative fill-ups but both give the same reading.

Has anyone any ideas why the fuel consumption is so high?
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Sat 25 Apr 2009 10:57
01 2.0 HDI Fuel consumption - Peter.N.
47 mpg combined sounds pretty good to me, that's worth well over 50 mpg driven gently on the motorway. Why it has dropped could be any number of things, have you done more short journeys or sat in traffic longer than usual, been running the aircon? Driving at 70 uses a lot more fuel than driving at 60. Brimming the tank each time is probably the most accurate way of testing. Unless you have an engine management fault its difficult to explain otherwise. Does it smoke at all in normal driving?
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Sat 25 Apr 2009 16:02
01 2.0 HDI Fuel consumption - Bluesky
No change in journey types. Always run the aircon. Switched it off once for a tank of fuel but it didn't make any measurable difference to the measured fuel consumption. Always brim the tank (or at least until the gun cuts out for the third time) whcih may give a small variation but this is likel to be less than a litre which would only give a variation of around 2.5% for the quantity of fuel I usualy put in.

While driving slower should make savings in practice a doesn't appear to have a significant effect.
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Sat 25 Apr 2009 18:53
01 2.0 HDI Fuel consumption - ifithelps
In very general terms, high-40s mpg is as much as you can expect from a modern two litre diesel.
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Sat 25 Apr 2009 19:56
01 2.0 HDI Fuel consumption - Steve Pearce
I used to average 52-53 in my 2.0HDi Picasso. My current 2.0 dCi Qashqai is struggling to get to 40 however!
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