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  Where are my figures going in Real MPG? 20 May 2012 (Ask HJ)
  I have twice posted my real world fuel consumption figures to your site and on both occassions thay have subsequently disappeared. Why is this happening?
• BMW E46 320D - Ignition/Starting Issue 6 Feb 2012 (Forum)
  When you turn the ignition to position 2 the Engine Warning/MIL light doesn't come on, neither does the oil pressure light and the temperature gauge goes all the way into the red and there is no sound from fuel pump. It will crank fine like this but show no signs of firing. I can get it to start eventually by turning ignition on and off until all lights etc come on the dash as normal, you can then hear the fuel pump working but takes a long time to build pressure - around 13 seconds.
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  Shell V Power and Tesco Momentum 99 24 Jan 2012 (Ask HJ)
  Thanks for your prompt reply to using Unleaded Fuel and putting in additive. No more Redex for me. Just read a report which compares Tesco Momentum 99...
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  petrol or diesel for fuel economy? 2 Dec 2011 (Ask HJ)
  I'm looking to buy a replacement family sized car in the new year, I want something good on fuel econonmy and am considering a diesel. I feel that if I...
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  Driller thrillers 28 Nov 2011 (Ask HJ)
  In November 2009, holes were drilled, at night, in the fuel tanks of a number of cars in Kingston, Surrey. On 04 November 2010, a person was convicted...
• Ford Focus 1.6 Petrol zetec 03 - P0172 - Fuel System Too Rich 7 Nov 2011 (Forum)
  The only issue i can see from my own obdii scanner is that long term fuel trim is -25% on idle everything else seems fine.  O2 sensor is switching between rich and lean keeping short term at 0.  When i rev the car to 3000 the long term trim reduces and short term increases.
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  Vauxhall Curser 1 Oct 2011 (Ask HJ)
  Three years ago we bought a Vauxhall Corsa Design 1400 automatic. We like the car but we are not happy with the fuel consumption. The manual says it should...
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  For richer for pourer 4 Sep 2011 (Ask HJ)
  I have a Jaguar XF 2.7D. I have always used Redex Fuel System Cleaner, but wonder if it is really of any use? I only drive about 5,000 miles per year and...
• Mercedes Vito 110cdi - Starting problems with Vito 110cdi van 16 Aug 2011 (Forum)
  After filling up with fuel at Sainsburys my van took  longer to start after stopped The problem continued to get worse and was a problem starting the next 3 times and then wil not start at all My friend came round and took a look and removed the air manifold from the air filter and sprayed some starter aid in fro,m a tin then the van started soon as key was turned but when switched off after about 15 mins of running it again would not start and the only way to start this is to do the same as he done I wonder if the problem is electrical or maybe just due to dirty fuel When I was replacing the air filter as a way of eliminating possible problems I caught the back of the  fuel pressure sensor and the nipple on the back seemed to just easily snap off making me wonder if the problem may have been this part being cracked before as it seemed to break of at the smallest of touches hav enow ordered a new replacement part anyway I also bought a new fuel filter which I intend having fitted soon as possible The thing I wish to know is why it only starts with the can of starting spray Any help would be thankfully received John
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  Supermarket diesel? 1 Aug 2011 (Ask HJ)
  I own a Toyota Corolla Verso 2.2 D4D. The Toyota dealer recommended that I not run the car on diesel purchased from supermarkets (do you agree with him?)....
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  Thanks for presenting your true mpg figure database, and don't blame the manufacturers for trying. 16 Jun 2011 (Ask HJ)
  Congratulations on launching a table to reflect true average fuel consumption figures (www.honestjohn.co.uk/realmpg). You cannot really blame the manufacturers....
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  Real life fuel economy register 8 Jun 2011 (Ask HJ)
  I filled out the real life figures for my Honda Jazz 1.2 in April /May. My figures were included and gave my true readings. However the site has taken...
• 2.0 tdci - tdci engine cuts out 1 Jun 2011 (Forum)
  2nd call dec 2010 - Advised AA to tow to garage without start from ford garage so they could see if any fault codes came up, no fault we detected and they couldnt fine any other problems, they thought it was frozen fuel so they checked fuel lines and replaced the battery, Today - called AA out and being towed to garage as we speak, i know its not frozen fuel in this weather. any help would be great as i cant drive it anywhere without the worry of it cutting out
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  Rip off Britain? 11 Feb 2011 (Ask HJ)
  I have just returned from Tenerife, a Spanish island in the Atlantic, miles from anywhere. Diesel fuel is 0.844 cents per litre or about £0.75 pence per...
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  Air flow meter 10 Feb 2011 (Ask HJ)
  Just brought a new air flow meter off ebay, was £32 and works fine, but think my fuel economy has gone down. I am getting at best 300 miles for a tank...
• Nissan X-trail DCI 2004 model - Used home made diesel... Need advice 11 Jan 2011 (Forum)
  I have cleaned the Mass Air Flow meter (it was needed, It was very dirty) I have also added injector cleaner for diesel engines to the normal fuel.
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  Our new Fiat Panda automatic has returned an excellent 55mpg average over 5000 miles. 14 Oct 2010 (Ask HJ)
  We recently swapped our old Rover 45 1600 auto for a FIAT Panda Automatic. We're really pleased with it - particularly the fuel consumption. We've always...
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  Vauxhall Zafira 2 Oct 2010 (Ask HJ)
  my Zafira has been playing up for a while now when its low on fuel in looses power only on a left turn. However it's been in 5 garages now and they haven't...
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  Why doesn't my new Opel Astra doesn't achieve the quoted fuel economy figures? 10 Sep 2010 (Ask HJ)
  My new Opel Astra 1.7CDTI SE (110) is still heavy on diesel with over 13,000km on the clock. The manufacturer quotes circa 61mpg, whereas I am lucky...
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  My Ford Mondeo screeches under acceleration - why? 16 Aug 2010 (Ask HJ)
  I have a Ford Mondeo 2-litre TDCi. I put some V-Power fuel in it last week and it started belching out black smoke and misfiring more than usual. On further...