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  There's potentially water in my car's fuel tank. What should I do? 29 Jul 2021 (Ask HJ)
  I left the fuel cap off my petrol Kia. I didn't find this out for 3 weeks whilst on holiday. Rain probably got into the fuel tank. What should I do?
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  Starting on hills with low fuel 7 Nov 2011 (Ask HJ)
  My car won't start on hills facing upwards.
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  Fuel economy when coasting 9 Aug 2012 (Ask HJ)
  A leaflet from the Department of Transport ("Be a smarter driver and save money") says this: "Don't coast downhill or towards the lights in neutral as...
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  Where's the fuel pump in my 1998 Volkswagen Golf? 7 Aug 2010 (Ask HJ)
  I had the AA man come and recover my 1998 Mk4 Volkswagen Golf, and he whittled the non-starting problem down to a fuel pump. Would you know where the fuel...
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  Supermarket fuel v branded fuel - which is best? 27 Mar 2024 (Ask HJ)
  I have a question for you about what is the best, most suitable fuel (petrol) to put in my recently bought 2019 Kadjar S Edition 1.3 TCe 140 EDC with 21K...
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  Should I use premium fuel? 20 Jul 2020 (Ask HJ)
  Is it a good idea to use premium fuel in my 2018 Ford Fiesta 1.0-litre?
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  Hyundai ix35 fuel economy versus Mitsubishi ASX 8 Jan 2011 (Ask HJ)
  Due to the Hyundai ix35 fuel consumption problems, is the Mitsubushi ASX a better bet overall?
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  Why do some supermarket fuels give lower mpg? 30 Apr 2016 (Ask HJ)
  I have noticed a considerable difference in mpg when using some supermarket fuels compared to Shell V-power. Is this due to supermarkets buying low grade...
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  Does coasting downhill use more fuel than remaining in gear? 16 Jun 2012 (Ask HJ)
  Some tell me that coasting downhill in neutral uses more fuel than remaining in gear. However, the MPG computer in my 1992 Corrado G60 says otherwise....
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  Fuel pump problem 15 Jun 2011 (Ask HJ)
  Where can I find the location of my fuel pump relay? Does it sound as if it needs changing? I can drive the car for as long as I want when I start it up...
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  Toyota Yaris fuel pressure problem 19 Oct 2015 (Ask HJ)
  I bought a Yaris 55 plate 1.4 D4D but after 20 miles driving it it started losing power and have to stop for 5-10 mins and it stated again called AA who...
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  Where is the diesel fuel filter located on my 59-plate Saab 9-3? 3 Jul 2010 (Ask HJ)
  Where is the diesel fuel filter located on my 59-plate Saab 9-3?
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  How do the windows and air conditioning affect fuel economy? 12 Oct 2013 (Ask HJ)
  Which has the least effect on fuel consumption: having the air conditioning on or opening a window?
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  How far can I drive with the fuel light on? 25 Jun 2020 (Ask HJ)
  How would I know how many miles I can drive when the fuel light is on before I actually run out of petrol?
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  Car will not start after running low on fuel 17 Jun 2013 (Ask HJ)
  I ran low on fuel recently in my Volkswagen Bora, but now my car won’t start. I called the RAC, who sprayed Easy Start and changed the crank shaft sensor,...
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  How can I use the air con in a way that won't reduce fuel economy? 9 Jul 2017 (Ask HJ)
  I know that a/c reduces fuel economy, but what would achieve better fuel economy - to set a higher temperature and higher fan speed or to set a lower temperature...
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  Ford focus fuel pump failure... at three years 7 Jan 2013 (Ask HJ)
  I own a (July) 2009 Ford Focus 1.6-litre petrol, which has covered 30,000 miles. During Christmas, the fuel pump failed and I was left with a bill of £400....
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  Where's the fuel pump on my Clio? 9 Dec 2011 (Ask HJ)
  Where do I find the fuel pump on an 06 plate Renault Clio 1.2?
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  Can a sticky variable nozzle turbo cause high fuel consumption? 17 Jun 2010 (Ask HJ)
  Can a sticky variable nozzle turbo cause high fuel consumption?
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  Can a fuel additive void my car's warranty? 7 Mar 2014 (Ask HJ)
  Could a manufacturer withdraw their warranty if a fuel additive product is used?