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• Volkswagen Bora - Fuel consumption 17 Jun 2010 (Forum)
  The question is: Can a sticky turbo vanes or bad MAP sensor cause this symptons? I mean the increased fuel consumption and the bit black smoke. The weird thing is when I get first time limp mode,there was not black smoke or increased fuel consumption.I have just realised since the turbo has been cleaned with innotec cleaner.
• Renault Laguna II - Laguna 2.2 dCi VERY high fuel consumption 20 Mar 2010 (Forum)
  Before I start, yes I got a Renault, bad mistake so I dont need any of that information :D For a while now I have been getting really low fuel economy on my 53 plate Laguna 2.2 dCi. Hoping you guys here can provide some suggestions. The official figures are around 33/43/53mpg for town/combined/motorways respectively. Got the car in June and for the usual commute (90% motorway, 10% town) it was averaging around 45mpg.
• Mondeo s reg. Significant fuel leak 13 Jun 2006 (Forum)
  Haynes says remove the tank first before dealing with them. I am hoping it is just a pipe come off. When fixed it should improve my fuel consumption a bit.
• Are speed ramps killing my fuel economy? 13 Apr 2003 (Forum)
  I usually have to slow to about 10mph to take them. It occours to me that the reason for my shocking fuel economy when at home could well be the slowing down and subsequent speeding up from using these speed ramps. Am I on the right lines here? Could it make such a difference? Also, what effect are these ramps having on my car?
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  How much better MPG will a hybrid offer compared to petrol? 23 Jul 2024 (Ask HJ)
  How much better is real mpg for a mild hybrid that a similar petrol car?
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  Is Xenum petrol additive any good? 28 Jul 2023 (Ask HJ)
  A friend has suggested that I use the above but would welcome your comments. I drive a BMW 420i cabriolet auto and a Toyota Aygo X auto. I rarely use supermarket...
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  Why are there so few small cars offered with automatic gearboxes? 20 Sep 2019 (Ask HJ)
  I am thinking of buying a small car but would prefer automatic. The choice seems very limited - can you advise why this is. The Volkswagen Up is no longer...
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  What's the best compact long wheelbase van? 4 Mar 2019 (Ask HJ)
  I'm looking to buy a small long wheelbase van that's good on fuel and the lowest on van tax. What do you suggest?
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  What can I do to reduce the emissions on my Rover 75? 5 Feb 2019 (Ask HJ)
  What can I do to reduce the emissions on my 2003 Rover 75 Connosieur?
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  Should I use Shell V-Power in my 1.2 Puretech engine? 29 Sep 2017 (Ask HJ)
  I have Vauxhall Crossland X 1.2T 130PS and intended to use Shell V-Power fuel to keep the components as clean as possible. After reading the owners manual,...
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  A car hit my broken down van on the side of the road - who's at fault? 21 Jul 2017 (Ask HJ)
  I ran out of fuel and was stopped on the motorway as far over as I could go (no hard shoulder). I was there for some time and was on the phone to the police...
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  My Volkswagen has improved since the emissions fix - is this unusual? 9 Jun 2017 (Ask HJ)
  We have a Volkswagen Golf 1.6 TDI which has had the software fix applied. Over the last month or so we've had a number of trips to London covering A and...
• Vauxhall Astra F (1991 - 1998) - 1996 1.7 TD - Intermittent Starting Fault 4 Feb 2017 (Forum)
  Sometimes it will start first time others it may take a good few attempts but nearly always when it does start it's within a few seconds of turning the key i.e. increasing cranking time does not have a positive effect. For this reason I suspect the problem is with the immobiliser and not air in the fuel/backdraining or glow plugs or starting / charging system. There was a problem with the main fuel shut-off solenoid but that was more that it wasn't shutting as opposd to not opening. The plunger has been removed to bypass it at the moment and the engine has been starting and stopping on the immobiliser solenoid.
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  Is my car using more fuel after a software update? 14 Nov 2016 (Ask HJ)
  I have a 2013 A6 Avant 2.0TDI, driving to work at 40-45mph for approx 10 miles the computer was reading between 52-60 MPG every day. Now, I left the car...
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  Does the Mazda CX-5 suffer from DPF problems? 30 Aug 2016 (Ask HJ)
  I am thinking of buying a Mazda CX-5 2.2 diesel automatic (2WD). I have two questions :- (a) Will the above vehicle be adequate to tow a caravan, 1300kgs...
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  Wheel Alignment 6 May 2016 (Ask HJ)
  I've just had a full new set of tyres fitted to my 2013 BMW 5 Series Touring 520d SE at 29,000 miles, the garage also did a wheel alignment check, and...
• Peugeot expert Hdi 2002 - Peugeot expert fault, need an experts input ! 18 Jan 2016 (Forum)
  Ok here goes, had this van for years, first got it it went like a rocket ship but not now, about 3 years ago van wouldn't start, Peugeot specialist diagnosed as ecu fault do replaced ecu and all was good, about a year later under hard load it would cut out, and illuminate elm light, restart after 5 seconds and run fine till the fault re occurred, this got more frequent until I was towing a car home and had to disconnect fuel rail sensor to get home, went to start van one day and it wouldn't start, looked on forum and tried double pin relay, connector was damaged so I wired up new relays and the van would run again, still in limp mode with fuel rail sensor disconnected, got a scrap car to swap bits over from and here's where I am now, Swapped injectors Swapped rail sensor Swapped for And it was still no better so I assumed the worst and changed high pressure pump, van started up and eml came straight on, yeah still in limp mode so I took it for a brief drive, cleared fuel rail pressure sensor fault and it wouldn't clear, turned van off to check fuel rail sensor wiring ( one pin earth, middle pin 9.3v with ignition on and other pin 4.98v, thought the 9.3 reading was strange so traced wiring to check for damage but seems ok, went to fire van back up and it won't start Fault codes p1135, p1517, p0234, p1100, p0380, p1138 all return after cranking and p0190 won't clear, please help
• X plate Citroen Saxo diesel - 2000 Saxo Diesel cold running 63000 miles 24 Jan 2015 (Forum)
  Will try a temperature sensor to see it this helps as I assume it is linked to the ECU and replace the fuel filter as they are cheap. Also read about a 'Thermostatic Valve' in the fuel line which looks like a promising answer to my problem....are they expensive, easy to get at for a D.I.Y machanic and can they be repaired/cleaned?
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  Is the Toyota Prius a reliable used car? 1 Jan 2015 (Ask HJ)
  I am interested in cutting my car's running costs. At the moment I have a 2002 Ford Focus 1.6 petrol, which isn't great on fuel and is expensive to tax....
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  Peugeot 308 fuel consumption - why is it so poor? 18 Dec 2014 (Ask HJ)
  Have you had any feedback from owners of the new Peugeot 308 regarding fuel consumption? I have just taken delivery of an Allure 2.0 Blue HDI Automatic...