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  Why does the fuel economy differ by 9mpg between two identical Ford Focus? 10 Aug 2010 (Ask HJ)
  My wife and I have identical Ford Focus 1.8 Zetec diesels, one four and one two years old, and we often swap. The tyres are the same make and same pressure,...
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  Is there anything I can do to improve my 1986 Peugeot 205 GTI's rough running? 10 Aug 2010 (Ask HJ)
  I have a soon-to-be-classic Peugeot 205 GTI, a 1986 C-reg that I've owned for 18 years. It's done 120,000 miles and is in generally good shape, but has...
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  Will using a premium diesel help with my Mercedes-Benz E220's running problem? 23 Jul 2010 (Ask HJ)
  My 2007 Mercedes-Benz E220 CDI with 49,000 miles sometimes used to feel like it was trying to lurch forward while moving at low speed, without any change...
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  Bad start to the year 27 Mar 2010 (Ask HJ)
  I am wondering if there is some kind of ombudsman/arbitration service available for a dispute with a garage. Long story short, I took my van into a Birmingham...
• Renault Clio II (1998 - 2001) - '99 1.6RXE Rough idle + Car won't rev up 14 Sep 2009 (Forum)
  Their report is as follows: Trouble Codes:- Oxygen sensor circuit Loss of Power to ECU Items Checked:- All engine sensors check out OK on ove data, except oxygen sensor which remains low all the time, unless fuel is restricted or MAP sensor vaccum pipe disconnected, then fluctuates normally. Continuity between oxygen sensor and ECU checked OK All earths in engine bay and on engine OK Earths and power to ECU OK ECU independently checked twice (both OK) New parts fitted:- Oxygen Sensor Inlet manifold gaskets New Fuel Pump Fuel Regulator Spark Plugs and leads Fuel replaced in case of contamination Conclusion:- Engine appears to be running far too lean I subsequntly gave the car to the local Renault garage and the cannot find anything at fault on their diagnostoc system and have checked the electricals etc and have also completely drawn a blank with their own car!
• Driving diesels with health in mind 19 May 2009 (Forum)
  My reasoning is, the compression is maintained, the exhaust temps are kept nice and high, soot build up should be reduced, possibly less smoking and carbon build up, the revs just off boost mean that big power requests are answered with enough air to fuel mix from the turbo being ready so you dont get big clouds of black smoke / unburn't fuel. So at between 1.8k and 2.6k there is possibly less stress on the DMF and turbo. I also find that providing you maintain a steady speed there is little difference in fuel consumption between lower RPM's and say 2k.
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  My car was overfilled with oil during a service and needed repairs - how can I get my money back? 7 Jul 2010 (Ask HJ)
  My car went through a full service at a well known high street garage on 6 April 2010. After this, I noticed the fuel consumption increased significantly...
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  A car I agreed to buy has been misfuelled by the dealer - should I negotiate a discount or just reject it? 27 Jul 2018 (Ask HJ)
  I have agreed a deal on a used Maserati Quattroporte Diesel and paid a £1000 deposit (to hold the car until collection) part of the deal was a full MoT....
• BMW 3-Series E46 (1998 - 2005) - 2003 2.0 320d turbo boost problem 5 Nov 2015 (Forum)
  Independent mechanic NOTE : Car boost was perfect at this point ? and only seemed noticeable from 120,000 miles on. 3. Fuel Pump to fuel tank @ 125,000 Miles ? Independent mechanic 4. Fuel Pump (intermediate) @ 125,000 miles ? Independent mechanic 5. 4 fuel injectors fitted ? BMW dealer NOTE: Changing the fuel injectors solved the warm start problem; however turbo boost problem still was not resolved. 6.
• BMW 1-series - Returned car to dealership due to issues - advice 10 Dec 2014 (Forum)
  Cannot select or navigate to anything from the I Drive menu. Fuel Leak – OSR Wheel arch area Strong odour of petrol inside the car after filling the fuel tank, and after refueling to maximum (one click)there's a substantial leak from the OSR wheel arch, accumulating and dripping from the RH Rear jacking point area, further contaminating evident along the length of the RH Sill Panel.
• Any - Analysis of Rechargeable Battery - Electric Cars 16 Jul 2014 (Forum)
  Given that for every 10 kWh (units) of electricity made 'available for use' in our homes, the far distant, Midlands based fossil fuel (coal or natural gas) powered power station has to generate 37kWh of 'heat energy' then surely it makes much more economic and ecological sense for us to generate our own electricity as close to home as possible?
• ANY - Inefficiency of Rechargeable Battery-Electric Cars 12 Jul 2014 (Forum)
  Given that for every 10 kWh (units) of electricity made 'available for use' in our homes, the far distant, Midlands based fossil fuel (coal or natural gas) powered power station has to generate 37kWh of 'heat energy' then surely it makes much more economic and ecological sense for us to generate our own electricity as close to home as possible?
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  Autumn Budget 2025: What it means for car owners 27 Nov 2025 (News)
  
• Well here we go, toll roads 15 May 2022 (Forum)
  In replacement of, or maybe (I think) in addition to, fuel duty? https://news.sky.com/story/toll-roads-could-be-introduced-to-uk-roads-as-electric-car-ownership-surges-12572599
• MGZS 2005 - Diesel additives, Premium diesel 3 Mar 2017 (Forum)
  I would welcome any advice regarding the use of additives in diesel fuel or premium diesel please. Have tried searching the forum without success , Regards , Mike
• Citroen DS5 - PDF REGENERATION 30 May 2015 (Forum)
  Sealy have produced a bit of kit that can perform a regeneration on the PDFit links into the computer and increases the revs and the fuel intake thus increasing the engine temperature would this be enough to complete a full regeneration of the PDR
• no specific model - GDI TURBO OR MPFI TURBO? 30 Oct 2014 (Forum)
  from view point of fuel consumption for a passenger car which of following techology for engine is the best solution? 1- dowsizing with turbo GDI 2-dowsizing with turbo MPFI
• Blowing Gasket. Will this effect my MPG - FIat Bravo 1.6 9 May 2011 (Forum)
  The downpipe gasket is slightly blowing in my Brova. Would this effect the MPG by much? MY car seem to be going through a lot of fuel.
• Vauxhall Zafira - problems finding the ecu 15 Sep 2010 (Forum)
  hi my car has now been in garage for 4weeks still not fixed i needed a fuel pump but the garage cant seem to locate the ecu to fit the new part
• VAT increase 14 May 2010 (Forum)
  Given a lot of political commentators are predicting a VAT rise to at least 20% within a year, what has the BR community got to say about the effect this will have on motoring, as this increase is reflected in higher fuel prices and the cost of new vehicles?