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  Do current emissions figures underestimate fuel economy from an emissions and a taxation point of view? 21 May 2011 (Ask HJ)
  You wrote that the issue of certified fuel economy figures is about to explode in the face of the EC. It seems to me that this is more likely to explode...
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  Spurts car 1 Aug 2009 (Ask HJ)
  I have owned my car since new. I have recently encountered a strange problem with the fuel tank. On opening the filler cap quite a large amount of air...
• Honda Civic 1 4i 1998 - Fuel type E5 or E10 31 May 2022 (Forum)
  I changed to the more expensive E10 but am unsure if I am ' pouring my money' away & can fill up with E5   .
• Vw golf tdi - Fuel problem 4 Feb 2015 (Forum)
  Car runs fine 10/15 miles then cuts out once you slacking 3 screws on filter housing lift it up let it draw in some air it runs ok again for same as ?
• INJECTION DOC - fuel saver 11 Aug 2011 (Forum)
  once again injection doc you are THE MAN i've post only 3 questions on this site and you provided the correct answers to all and in this case a web link...
• Peugeot 306 diesel 16 Jun 2006 (Forum)
  Peugeot 306 1.9 diesel no fuel coming from fuel injection pump when turning engine over. Is it the pump, the immobiliser or some other fault? Does anyone have any ideas, know how to check or had a similar problem?
• Cheap fuel - a con or not?? 10 Oct 2004 (Forum)
  Had this site pointed out to me http://www.draxfuel.com/ An 'allowance' ?? - I can't see Greedy Gordon allowing this one. Current estimates are 69p...
• Alternative fuels 10 Sep 2004 (Forum)
  It seems that in Brazil you can get cars that run petrol and alcohol: http://www.miami.com/mld/miamiherald/business/national/9493414.htm?1c How expensive...
• Impreza fuel consumption! 2 Feb 2003 (Forum)
  Am I going to regret buying an Impeza turbo? I only do (at the moment) 8000 miles per year, but I have really enjoyed driving one!! Buy one or buy something...
• Clio Mk2 Phase 1 - 2001 - Clio No power to fuel pump - Fuse? Relay? Diagram? 2 Sep 2024 (Forum)
  A few days later someone else tried to start it but failed. I went to the car and found no fuel getting to the injectors, then found no power at the fuel pump. I did not have any cable so could not send power to the pump to see if that resolved the issue. I plan to do that next time I go the car.
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  Will fitting mudflaps affect fuel economy and road noise? 5 May 2023 (Ask HJ)
  I’ve recently purchased an Audi Q5 and am considering fitting mud slaps as the sides of the vehicle dirty up quickly in wet weather conditions. Would such...
• ford focus - fuel pump broken. Again! 15 Apr 2019 (Forum)
  Similar starting problems but after driving for about two miles i lost power whilst driving at about 40mph. The RAC diagnostic said there was a problem with the fuel pump P0232 (fuel pump secondary circuit) The first time it broke my mechanic told me that all the wiring was corroded and this was also the case the second time indicating that water was getting in somewhere.
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  Why does my car keep kicking out lots of white smoke? 16 Sep 2018 (Ask HJ)
  My Vauxhall Vectra has started kicking out LOTS of white smoke. Then nothing for days and then smoke again. The water level is dropping slowly but performance...
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  Is my Toyota Corolla really returning 50mpg? 19 Nov 2016 (Ask HJ)
  I own a 2005 Toyota Corolla T Spirit 1.6. All evidence I find on fuel economy states 38-40 mpg, including your own "Real Mpg". I cover mostly motorway...
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  Emissions Scandal - is Mercedes-Benz being investigated? 23 Apr 2016 (Ask HJ)
  In the light of Volkswagen problems with the emissions scandal, why has Mercedes Benz escaped investigation? I have an 10 month old SLK AMG Sport with...
• 51 plate Ford Fiesta Zetec. - Replacing both rear brake pipe sections. 6 Jun 2013 (Forum)
  Also, does the fuel tank need removing?
• 307 HDI 2.0 90 - 307 HDI suspected fuel pump failure 28 Apr 2013 (Forum)
  After some advice on a 307 likely fuel pump failure. Had a total loss of power and now car won't start, AA recovery guy did some tests on voltage, fuse etc to the low pressure pump and that all looks ok but when removing the fuel pipe feed to filter there was no fuel being fed from the tank.
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  Why is our Polo's fuel economy the same as our Audi TT's? 16 Mar 2013 (Ask HJ)
  I have covered 5700 miles, all on V-Power, in our 2011 Polo 1.2TSI 105 following your recommendation. It’s a great car in all aspects but one. On a run...
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  Do winter tyres have additional benefits over runflats? 26 Jan 2013 (Ask HJ)
  I decided to fit winter tyres this year, and now use Avons on 16-inch steel rims to replace the original 17-inch runflats on my BMW 3-Series. As expected,...
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  Fuel efficiency by time of year 3 Dec 2012 (Ask HJ)
  I now have a Kia Cee'd Ecodynamics 2011 but despite economical driving (e.g. 50-55mph on motorways, smooth braking etc) it's only getting about 49MPG....