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  Cruise control - what effects does it have on fuel consumption? 19 Sep 2010 (Ask HJ)
  I have recently purchased a car with cruise control. What are the pros and cons of using this with regard to fuel economy. Will I gain or lose driving...
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  Using premium fuel in my Volkswagen Passat has improved fuel economy and burns more cleanly. 10 Jun 2010 (Ask HJ)
  For a while I had been sceptical about the benefits of using higher quality fuel opposed to cheaper supermarket grades. Now that I have been using Shell...
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  Can tanker us 20 Mar 2010 (Ask HJ)
  I have made a New Year resolution to never fill my tank more than half full. My thinking is that I will be making a smaller interest-free loan of tax to...
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  Controlled substance 19 Dec 2009 (Ask HJ)
  Can you advise me whether cruise control on a long motorway journey is more fuel-efficient than the right foot? I thought that as the fuel is being constantly...
• Fuel consumption figures 16 Mar 2008 (Forum)
  The \'official\' fuel consumption (and CO2) figures for vehicles are about as useful as a luminous sundial. Real-world mpg is much lower than implied, and because the relationship between \'official\' and real-world varies from marque to marque/model to model, the published figures can\'t even
• CAFÉ ? fuel economy 6 Sep 2006 (Forum)
  These dumb Americans !! For those who don?t know (I?ve just found out) CAFÉ is an acronym for corporate average fuel economy. The American Congress has tried to pass a bill requiring an increase from 27 MPG to 33 MPG it was not passed. This would have required the American automobiles
• Volvo D5 Fuel problem 30 Oct 2003 (Forum)
  Hi, I've had problems with a Volvo D5, story is in Discussion. I've now heard from the dealer who is unsure as to what the situation is. Basically I had problems starting, to the extent the car wouldn't start. They swapped the Fuel pump and gave the car back. It failed again after 1200 miles
• Faulty fuel computer in my Renault 19 18 Nov 2002 (Forum)
  I have a 1989 Renault 19 with a 1.7 litre, carb engine, which is in very good condition overall, fully loaded with nearly 83k on the clock. Among the various electronic bits is a fuel computer that was an option when new (it includes a trip function and a digital fuel gauge). It's very rare
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  Fuel delivery problem with BMW 3 Series 30 Sep 2014 (Ask HJ)
  My BMW 3 Series E46 is running poorly, The engine appears to be uneven in its power delivery and feels like the diesel isn't getting through. Any ideas?...
• Ford Fiesta - Ford 'capless fuel' 20 Jul 2014 (Forum)
  I've just taken delivery of a newish Ford, and was surprised by the lack of a petrol locking cap.  The fuel flap can be opened without a key or inside cab release leaver, albeit there appears to be a strong spring door that will only allow the right fuel nozzle
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  Hyundai i30 - are there any known problems? 2 Feb 2014 (Ask HJ)
  Are there any known problems with a CRDI system as on the Hyundai i30? The fuel pressure is quoted as up to 30,000RPM and this seems incredibly high for...
• All makes - Maximum fuel efficiency speed 15 Nov 2012 (Forum)
  Radio 2's homwork query today at 6.45pm was 'at what speed would a car cover a set distance using the least fuel?' The answer was rather flimsy, but apparently 52-56 mph [ignoring all the car variables etc]. Most time was spent waffling on about making sure the boot was empty and so forth
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  Premium fuel worth the extra? 11 Sep 2012 (Ask HJ)
  My six year old Ford Focus only just passed the MOT emissions test, and I have been advised to use super unleaded petrol to keep the engine clean, is this...
• 52 TDCi Mondeo Auto (Ghia) - New fuel pump - TDCi Mondeo 5 Aug 2011 (Forum)
  Just a quickie, Mother needs a new fuel pump for her '52 2.0 TDCI (130) Auto Mondeo. Just want to clarify which fuel pump to buy; there are several around on eBay which all look identical, ranging from £120 to £500+; are they the same or are there subtle differences
• peugeot 307 hdi - 307 fuel pressure problem 11 Jul 2011 (Forum)
  hi, i have a peugeot 307 2.0 hdi 90 it comes up with anti polution fault and eml it will start up but soon as you put your foot down it will die and not restart. took it to a garage and they put it on a diagnostic machine which gave me back two fuel pressure faults
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  TVR hot start issues 12 Apr 2011 (Ask HJ)
  Our 1997 TVR Chimera wont start immediately after stopping when hot (i.e stopping for petrol!!!) It will eventually but only after cooling down. Is that...
• Ford Mondeo IV (2007 - ) - Poor Fuel Economy of 2.0 TDCi with DPF 4 Oct 2009 (Forum)
  If you are thinking of buying a Mondeo diesel for its fuel economy, think again. I have just bought a new 2.0 TDCi Titanium X Estate fitted with a DPF, which will not achieve more than upper 30's mpg. The DPF has had an effect on fuel economy, so if you want a Mondeo IV diesel to get more MPG
• Peugeot 106 (1991 - 2002) - 96 1.5 Diesel fuel leak after brimming it 16 Jun 2009 (Forum)
  New to this car, fill it to the brim and - consternation among the Shell guys - diesel started leaking all over their forecourt. Quickly bought a fuel can and whipped under the leak, but now diagnosing. After around half a litre or so, it stopped, but the fuel was capillaring down to the bottom
• Ford Mondeo II (1996 - 2000) - 00 2.0 poor fuel economy 9 Apr 2009 (Forum)
  Please anyone any ideas why my mondy is doing so bad on fuel,I used to get just over 300 mls out of a tank while pottering about but a lately its been more like 220ish. i`ve checked brakes not binding/replaced lamda sensor/cleaned the idle speed control valve.changed all the filters air/fuel/oil
• Mercedes Benz Vito 123 kombi (2005 - ) - Vito 04 111 CDI - Fuel consumption poor 23 Feb 2009 (Forum)
  hi i have a new shape 04 plate merc vito 111 cdi compact van and i am having trouble with the fuel consumption as it is only doing 26-27 to the gallon @.91p per litre and 370 miles to £60.00 of diesel and that is either on the motorway or around town does anyone own a new vito with this fuel