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  Are diesels still superior to petrol-fuelled cars in terms of fuel economy? 6 Jun 2010 (Ask HJ)
  I am new to Audi but love our new A5 SB. A few thoughts. We have a 2.0T 180bhp petrol. We are getting 44.1mpg over 6000 miles, and on a recent 1000-mile...
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  The mouse that roared 26 Sep 2009 (Ask HJ)
  My wife has a 12 month old FIAT 500 diesel. Today while driving it "made a funny noise" then started to accelerate. She put in the clutch and pulled over...
• Peugeot 306 2.0HDi Meridian 2000/W - Engine Management Light 25 Oct 2011 (Forum)
  Also, I re-fueled yesterday but had let the fuel level run down really low..... When starting the light briefly goes out then comes back on immediately and stays on. Is it safe to use until I get it sorted.
• Range Rover - surging and poor starting 22 Jul 2007 (Forum)
  Hiya, My mum's 1996 Range Rover diesel has been a bit temperamental recently. Two weeks ago it wouldn't start, was trailered away to local independent who diagnosed the fuel pump and replaced it. We got it back last week, but it was still reluctant to start in the morning (taking 30 seconds usually), and the engine surged from time to time, but stopped if you switched it off and then started again.
• Any - Cheap way improve fuel economy by 10% ? 24 Sep 2014 (Forum)
  Toyota, Honda, Citroen etc) charge upwards of an additional 3 to 5 thousand pounds for a petrol or diesel electric 'hybrid' version of several of their standard models - only to achieve little better than a 5 mpg real world improvement - then my invention, which could be applied to any modern petrol or diesel car for probably much less than £500 on the RRP - should be far more attractive.
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  How can I tell when the DPF is regenerating? 4 Jan 2022 (Ask HJ)
  Is it possible to purchase anything that lets you know when your diesel particulate filter (DPF) is regenerating e.g. something simple like a bulb lighting...
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  Do 'no smoke' treatments actually work? 1 Oct 2018 (Ask HJ)
  Can you advise me on Wynns Stop Smoke oil treatment or similar products. Do they actually work? I have a diesel and have been told it needs either a new...
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  How can I tell when the DPF regen cycle has completed? 18 Oct 2016 (Ask HJ)
  I own a 2012 Mazda 3 with a 1.6-litre diesel engine. Recently a warning light came has come on, stating that the oil level is too high. A local mechanic...
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  Why does my Mazda 6 need an oil change after 7000 miles? 20 May 2016 (Ask HJ)
  The oil change service indicator on my Mazda 6 2.2 diesel has come on. The car is just under seven months old and has 6300 miles on the clock. Would you...
• Oil Specifications 21 Nov 2001 (Forum)
  Automobiles (ACEA) Gasoline Performance ACEA:A1-98 Fuel economy version of A2-98 ACEA:A2-98 Basic Performance sequence ACEA:A3-98 Higher performance sequence Diesel Performance ACEA:B1-98 Fuel economy version of A2-98 ACEA:B2-98 Basic Performance sequence ACEA:B3-98 Higher performance sequence Hope this helps
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  Should I pick the Honda Civic 2.2 iCDTI or the 1.8 iVTEC? 14 Dec 2013 (Ask HJ)
  I've been reading up about the Civic 2.2iCTDI on your website. It looks good, but the 1.8 iVTEC also looks good. I'm just wondering which one's going to...
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  Is the Ford Focus 1.6 TDCI diesel a reliable, trouble-free car? 28 Apr 2012 (Ask HJ)
  I am considering buying a nearly new Ford Focus 1.6 TDCI. From all reports this would appear to be a very good car, but I am 70 years old and would prefer...
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  Would you recommend a Vauxhall Zafira automatic for a childminder? 12 May 2011 (Ask HJ)
  I'm looking at getting a Zafira as I'm a childminder and we need the extra seats. However I'd quite like an automatic but apparently they only come in...
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  A new car for our retirement 19 Feb 2011 (Ask HJ)
  My wife and I are both near retirement and we also want to retire our trusty, but now rusty, 10-year-old Merc 'C' Class saloon - as we find it's getting...
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  Station waggon 6 Feb 2010 (Ask HJ)
  I need a little car to run me a mile to my rail station. Don't want to fork out more than 2k, don't want anything too frumpy. I've seen 8-year-old Alfa...
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  Apulling prospect 23 May 2009 (Ask HJ)
  We are looking for a new car 4 wheel drive car or estate car, but not an SUV to tow our caravan. We drive about 6,000 miles a year of which at least 3,000...
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  Is buying an electric car for commuting realistic at the moment? 16 Mar 2020 (Ask HJ)
  My daily commute is a 180-mile round trip on a variety of motorway sections, roundabout filled dual carriage ways and B roads. I currently drive a 2009...
• Renault Clio - Should I change my car to a diesel? (advice) 3 Jun 2022 (Forum)
  I have recently eyed up a 1.5 litre engine diesel red Renault Clio car at a local trusted garage that actually does around 60-80mpg. This I have worked out the costs of my fuel bill could potentially be halved with long distances I intend to travel – considering the MPG is double on my current clio.
• Mazda 3 2.2 Sport Nav '17 - Mazda 3 2.2 Skyactiv Diesel Facelift issues 27 Apr 2022 (Forum)
  Hi All, I've read up as much as possible on the limited amount of information available on the Mazda 2.2 diesel (2017). It seems they used to be very problematic with dumping fuel into the oil, DPF blocking, EGR valves etc... a lot of the forums I've read tend to talk about pre 2017 models; making me unsure if these issues are still present in the facelift model.
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  Does my Kia cee'd have a DPF fitted? 3 Apr 2014 (Ask HJ)
  I'd like to be 100% sure whether my Kia has a DPF or not. The details are: Kia Ceed Hatchback (07-12) 1.6 CRDi LS (113bhp) 5d Date of Registration:...