new Citroen C5 poor fuel consumption

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Fri 17 Jun 2005 10:24
new Citroen C5 poor fuel consumption - kimberley42
I am beginning to regret buying my new Citroen C5! Apart from the still unresolved headlamp problem (detailed elsewhere on this forum), and the woefull lack of headlamp protectors being available, I am not at all impressed with the fuel consumption of the new car.

My previous C5 2.2 HDi Auto Estate (which my wife still drives) regularly returned 46/47 mpg on a motorway run from Wiltshire to west London and back, about 39 mpg aroung town and about 43 mpg on a high-speed trip down to Cornwall.

The new car (same spec except the Exclusive trim) is, on average, returning at least 10% worse fuel consumption. The M4 motorway run is about 40/41 mpg, about 34 mpg around town and an appalling 37 mpg on a recent trip to Cornwall! Both cars are used mainly for long-distance driving, both run on fully synthetic oil. The new car has travelled nearly 6000 miles now so it must be fully run-in.

I've had the car on the diagnostic tester at my local Citroen dealer 3 times but it checks out OK. They can't explain the poor fuel consumption, the erratic tickover nor the fact that the pollution system warning light came on for no apparent reason during a long normal driving trip at speeds well above that at which these pesky devices become unstable.

Anyone else got a problem?
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Fri 17 Jun 2005 11:55
new Citroen C5 poor fuel consumption - oldtoffee
Our 90 bhp Picasso HDI (chipped to 110) would struggle even before chipping, to give 46/47 mpg on a long motorway run so if are getting that out of your older 2.2 auto I think you're doing very well indeed. 37 mpg seems poor but not disastrous. IMHO I don't think 6,000 miles is properly run in for a diesel and if you're running it on synthetic from the start maybe it hasn't had a proper chance to bed in because of the high protection offered by fully synthetic? Our Picasso improved considerably at about 25,000 miles which some people have told me is how long a diesel can take to run itself in.
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Fri 17 Jun 2005 12:55
new Citroen C5 poor fuel consumption - bimmer-driver
The cars not fully run in at 6000 miles. May need another 6000 or more for everything to be fully run in.
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Fri 17 Jun 2005 21:37
new Citroen C5 poor fuel consumption - Timaru
I have an '03 2.2 auto estate, exclusive with SE pack, with 17,000 on the clock. The fuel consumption matches your new C5.

If you look on the C5 site you'll find it's about average with most owners moaning like mad.

Heaven only knows how your wife gets the figures quoted, is the computer over optimistic?
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Fri 17 Jun 2005 22:14
new Citroen C5 poor fuel consumption - Timaru
Link to C5 site.

autos.groups.yahoo.com/group/C5-L/
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