twiggins Posted March 7, 2003 Posted March 7, 2003 I've had my C5 Estate for a couple of months now (6000 miles on the clock) and I'm quite happy with it apart from the fuel consumption. I get around 45-46mpg if I drive it very carefully on A roads at about 70mph, with little town driving, and if I drive at about 80mph on the motorway I only get around 40-41mpg. This compares to some VW and Merc drivers that drive the same route that get about 50-53 on the motorway and we all drive at around the same speed. All my previous cars I've been able to get the EU combined figure or better, so it seems a bit odd that I can't get anywhere near the 50 for the C5. Has anyone else had similar mpg, or is this something to ask the dealer to look at ? Quote
pork_pie Posted March 7, 2003 Posted March 7, 2003 I am sure you did the usual "check tyre pressures, oil levels" but theres so much one can do. I had problems with my C3 Hdi between 5-7000 as it was returning 53-55 on a combined cycle no matter how safely I drove when I should have been getting around 62-65. I found out to my annoyance that the air intake pipe was incorrectly attached after work was done to the fuel filter weeks before. I took it to the dealer 3 times and got different rookies each time. I ended up fitting it meself and the economy stabilised and a range of 600 miles is guaranteed. Ask them to look at the air pipe/air filter as you may be getting a poor air to fuel mixture becaus I noticed pulling power was non existent as the engine was literally being starved of air. Also insist that the dealer checks the engine management to check the engine settings are accurate. Regards Porkpie Quote
pork_pie Posted March 7, 2003 Posted March 7, 2003 Oh and another thing, I don't think your engine will produce its optimal performance until after 10000 miles or your first scheduled service. Driving it carefully as you do means the engine will take a while longer to "bead in" which is no shame - it means yer car will be reliable in the long term. Example. In 1998 i had a 1.6 VTR. At first I got 26mpg even though i was light on the accelerator and by 40 mph it was in top gear By the 10000 milemark onwards it was doing 37mpg overall (official figire 36.7 mpg) After that I got 41-43 no sweat . (when cold I changed gear at 2000 rpm otherwise 2500-3000 rpm). Not once have I ragged it The only persons who wil have ragged it are the reckless Citren mechanics. If them checks I specified in my fiest reply dont work, give it a little time! Good luck. Quote
Kevin Posted March 7, 2003 Posted March 7, 2003 I have just taken delivery of a new C5 LX estate with the 110 HDi engine last Wednesday 5th March from Dutton Forshaw, Preston. I also had it 'SuperChipped'. Only 5 miles on it delivery mileage with a full tank. I will let you know how I get on mpg wise when I fill it up. Performance already appears fantastic, trying to take it easy though. My father has also bought a C5 SX saloon from DFP which is being delivered on the 21st March. He is not having his 'chipped' so it will be interesting to see how his compares with mine on mpg. My father's neighbour has also bought a new C5 SX saloon from Dutton Forshaw and a good friend of mine has ordered a C5 LX saloon, all because of my recommendation! First impressions of my C5 estate very favourable. Well built and very comfortable considering it is 'only' an LX. Quote
xtopher Posted March 8, 2003 Posted March 8, 2003 Kevin, What do you mean by superchipped and what improvements does it offer, Does 'the mod' nullify the warranty and increase the insurance band? New this week to a C5 HDi110bph LX (plus a good deal on SX alloys!)- my mileage is just under 3000 and am now monitoring the fuel consumption. Will let you know if interested. I have immediately noticed how much more 'difficult' it is to drive than my petrol Xantia becausr of the low revs ie more and correct speed gear changes around town - do you agree? Useful forum, thanks in anticipation, Xtopher Quote
Kevin Posted March 17, 2003 Posted March 17, 2003 I had a Cougar V6 before the HDi estate,and the in- gear acceleration of the chipped C5 is comparable. It goes like stink. No one can tell it has been done either,until you drive the car!! I had a boy racer follow me today because he was puzzled why my car was so quick I think.I left him standing,and I am driving it carefully.Just wait until it is run in. Power goes from 110bhp to 138bhp and torque from 184 to 242llbs! Haven't had a chance to check the mpg yet. Taking the car to France tomorrow so will fill it there with cheap diesel. Quote
xtopher Posted March 18, 2003 Posted March 18, 2003 Just done a 'small fuel check' on my 6 month old (3500miles) C5 110 some half local and half motorway less than 70 - it is returning approx 44 mpg. After my thirstyish petrol 1.8i Xantia I am not complaining (yet!). Xtopher :angry: Quote
mooseshaver Posted March 20, 2003 Posted March 20, 2003 Hey Kevin, does your chipped C5 have higher emissions? I'm thinking of getting my C3 chipped so it will play import games :angry: Quote
bencowell Posted March 20, 2003 Posted March 20, 2003 Is the car chipped on a rolling road or using a laptop on the real road? Did you get a printout of the power and torque curves? Diesel Car Magazine have many different outfits offering chipping for diesels. Ben Quote
Johnmac Posted March 21, 2003 Posted March 21, 2003 [FONT=Impact][SIZE=7]I have had a C5 110 SX for 12 months. It has 20,000 miles on the clock and I drive fairly conservatively. Although I am a lifetime Citroen owner I made a rash decision to move into the world of VW and the last but one purchase was a 110hp VW Gold TDI. This gave me:- a. fuel consumption of 54 mpg b. monthly reliability problems ! The CV5 is giving a disappointing average of 54mpg but 100% reliability. Say no more! Citroen pour moi ! John Mac :angry: Quote
xtopher Posted March 26, 2003 Posted March 26, 2003 Johnmac et al, Isn't it well known that the 'standard consumption tests' return more than favourable fuel usage; no one ever achieves these values? I know it depends on the journey but 54 mpg sounds good to me when my book says combined 50 and extra urban 60. On a slightly related subject does anyone know where I can buy Millers diesel plus - Honest John (Telegraph) swears by it but where the hell can one get it!? :) xtopher Quote
Kevin Posted March 26, 2003 Posted March 26, 2003 The Superchip technician informed me that they don't have a performance enhancing programme available for the C3 at present. With 1,700 miles on the clock, the last few tankfuls have given me: 37.2 mpg, 39.8 and yesterday 41.6. I don't know if the improvement in consumption is aligned to the engine running in. The last fuel consumption figure of 41.6 was 157 miles of fast autoroute driving in France averaging 80+ mph. When my wife had the Picasso HDi SX, it averaged 44 mpg. So getting over 40 mpg in a car the size of the C5 Estate is not bad at all. Regarding emisions, I really don't know. However he car appears to be very clean burning, not as smokey as what the Picasso was when you 'booted' it.. It appears the Superchip enhancement does not effect the fuel consumption adversely. I drove my father's non Superchipped C5 110 HDi the night before last. It feels like a different car, nowhere near the aircraft carrier steam ram pick up of mine and the engine seems more 'diesely' in noise. It may be that no two cars with the same engine sound alike, but mine is definately smoother. See performance graphs at: www.v-e-s.biz Quote
Kevin Posted April 4, 2003 Posted April 4, 2003 I filled up my C5 estate this afternoon (4/4/03) in Carrefour, Cite de Europe, Calais. Put in just over 64 litres...........phew that was close! Worked out the average mpg with a calculator............43.5mpg!! Getting better all the time, must peak soon though. Then did 155.5 autoroute miles at not less than 90mph before arriving back at Calais and a brim up at Carrefour before boarding the Shuttle. 38.7 mpg this time, but I was really shifting the whole time. Diesel down in price since last week in Carrefour from E.86 to E.76 or 52p a litre!! Had to brake hard due to wobbling cyclist today, EBA came into play hazards and all. Good job there was nobody behind as I did not mean to stop quite that quick, but the system took over due to the rate I hit the brakes rather than pressure applied. On another note, my C5 has not required a drop of oil during the running in period or even due to these very fast runs. Took delivery of the car on March the 5th and already have over 2,200 miles on the clock. Apart from the flickering headlights as mentioned in another topic, the car is 100%. Very impressive! Quote
bencowell Posted April 6, 2003 Posted April 6, 2003 Are you in Leeds Kevin? I ask because the link you posted for VES has a Leeds phone no. Did they chip the car when on a rolling road? How much? Ben Quote
smithy Posted April 11, 2003 Posted April 11, 2003 Hi Guys I've had a C5 110 sx diesel for 32000 miles so far and it has averaged 41/42mpg so I reckon its ok. Works out at around the gov figures of 8 to 9 pence per mile. I've reset the computer a few times before long journeys and its come back with some really good figures as you might expect, but I do a fair amount of round the city stuff as well. Running at under 70 on m/ways it will return impressive mileage but thats pretty boring. Just like any motor I guess you need to look at the overall average over time to get a real feel for it. Cheers Smithy Quote
bencowell Posted April 20, 2003 Posted April 20, 2003 Bought a 7000 mile 52 plate HDI 110 SX hatch, only had it for a week, done 300 miles, computer indicates around 44mpg. Has had several short journeys and been driven (hardish) on country roads with 3 people inside. Lovely motor, although some knocking from the rear suspension. Ben Quote
Albert Posted April 22, 2003 Posted April 22, 2003 The knocking is a common fault on the C5. It has been sorted on new one's. I think there is a retro fix on earlier one's which involves balance weights on the suspension and different spheres. I had a drive of a 1.8 petrol a few weeks ago, which was a 51' reg and had the knock too. Quote
Kevin Posted April 25, 2003 Posted April 25, 2003 Filled up in Auxi le Chateau today, did 89 miles of brisk driving including a 40 minute stint on the A16 up to Calais, where I brimmed it again before getting on the Shuttle. MPG = 45.88!! I think that is remarkable for the size of car and perfomance, I wasn't pussy footing it around either. Quote
CCCTech Posted May 9, 2003 Posted May 9, 2003 Fuel consumption certainly wont reach a 'very good' level for 10k miles or so, and as has already been pointed out the govt figures are difficult to achieve - much harder in a petrol though I reckon ! As for economy when chipped - As a rule, an improvement in economy of 10% can be expected. Some may be lower and I've even had 23% improvement mentioned to me - I think this was the exception not the rule though. Quote
bencowell Posted May 9, 2003 Posted May 9, 2003 As for the combined figure being harder to achieve in a petrol, nonsense. My Xsara 1.4 routinely did 40mpg+, combined of 41. My Saxo before that did 44 mpg, combined being 43. The C5 110 SX does mid to low 40's, combined 50. That being said, the C5 is a much larger car, and takes more force to start and stop it. I'm not complaining, would just like it to be closer to 50mpg. Ben Quote
Kevin Posted May 9, 2003 Posted May 9, 2003 Filled up yesterday and averaging 41.58 mpg of very fast autoroute driving,ie not less than 140 kmh. SuperChips in an advertising feature conservatively reckon on a 5% improvement in fuel consumption, if you drive the car like you did before.The trouble is that you tend to use the extra performance, but I still think that getting over 40 mpg consistently is exceptionally good. That is all we got out of my wife's Picasso HDi. I think that perhaps the chipped 110 HDi is the optimum engine for performance and potentially excellent fuel economy. But I am getting a 2.2 Hdi next......definately. When chipped the performance of that engine goes from 136 to 174 bhp and the torque from 238 llbs to a staggering 319!! In gear acceleration must be unbelieveable. Quote
Wrinkles Posted November 14, 2004 Posted November 14, 2004 Had my 51 plate HDI 110 for 14 months now and have rarely hit the stated MPG. I always brim the tank and record the consumption and the overall average for the time I've had it is 39.2 Mpg. Admittedly this is mostly long fast Mway runs or commuter traffic jams. I have, however achieved 50+ whilst on holiday and touring at steady 50-60 MPH. Overall it could be worse. Quote
PaulCartwright Posted November 16, 2004 Posted November 16, 2004 Hi i had a 2.2 HDI (as you can see from my earlier posts) and the most i could get out of that is 38 MPG i took it to citroen (spot of chasetown) and they said that its ok and the heavy diesel noise was "how its supposed to sound" i am also running a 2.0 C5 exclusive and all i can get out of that driving VERY VERY sencibly is 17 so again i took it to citroen under the warrenty and they are replacing the lamba sensor on the front of the engine and one on the exhaust whilst i was there i asked them to have a look at teh airbag light they said that "the whole airbag system will need replacing" and all that needs doing is the airbag ECU resetting oh and my battery is knackard...apparently so if your concerned about MPG try chaning the lamba sensor and like me youll get 5/10 mpg more if you switch off the air con hope this has helped Paul Quote
sanbro Posted November 23, 2004 Posted November 23, 2004 You can superchip just about any car, wether it be a diesel, petrol, turbo or non turbo. The added benefit is that you gain more torque and more brake horse power by re-tuning the car's ECU. But it don't come cheap at around 500 quid for most modern cars.... If you want to know where to find a place near you just "google it" You can also find Diesel Tuning Boxes on Ebay for around £150 - £200 quid which do the same thing and are DIY . Quote
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