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My 52-plate Ford Mondeo takes a while to start when cold and misfires - what's wrong? 13 Sep 2010 (Ask HJ)
I have a Ford Mondeo Ghia TDCI 2-litre diesel. When it's cold it takes a while to start, it starts smoking and I can feel some misfiring. When it's hot... -
Why does my biodiesel Citroen Xantia stall first thing in the morning? 9 Sep 2010 (Ask HJ)
I am using a glow plug style vegetable oil pre-heater unit on a Citroen Xantia with a Bosch pump. My fuel mix is 80 per cent new vegetable oil and 20 per... -
Why am I having trouble refuelling my Vauxhall Vectra? 2 Sep 2010 (Ask HJ)
I bought a Vauxhall Vectra Exclusive 1.8 2008 in January this year. I haven't used the car much in the past, but now I have started to use it a little... -
Is the BMW 5 Series 8-gear auto more fuel efficient than the Mercedes-Benz E-Class 7-speed? 8 Jul 2010 (Ask HJ)
I'm thinking about getting either a BMW 530d or a Mercedes-Benz E350 CDI coupe. I want an automatic, but the BMW has comes with 8-gear automatic and the... -
Alcoholic anonymous 17 Oct 2009 (Ask HJ)
Now living in Australia I have acquired a second-hand six-year-old Honda Jazz at auction with 165,000 kilometres on the clock - only an average mileage... -
Is my car incompatible with bio diesel? 18 Feb 2014 (Ask HJ)
Since purchasing my Hyundai i30 I have kept its full service history. The car was serviced in October 2013. The car showed no issues - although a fuel... -
The injector in my Mazda 3 has failed - is this due to using supermarket fuel? 21 Aug 2017 (Ask HJ)
Whilst driving along, my 2012 Mazda 3 1.6d (39,000 miles) suddenly juddered and went into limp mode. I cautiously negotiated to the hard shoulder with... -
Should I buy a petrol or diesel SUV? 22 Jan 2025 (Ask HJ)
I'm looking for a 2019 VW Touareg 3.0 - should I buy the TDI or TSI, I would be towing a caravan but it would be 99.5% solo driving. I'm thinking of future... -
Will fitting Michelin Cross Climate+ tyres affect my fuel consumption? 5 Jan 2024 (Ask HJ)
My 2017 Fiesta 1.0 litre Ecoboost (previous model) has 195/55/15 tyres which are due for replacement. I'm considering changing to an All Season tyre. ATS... -
Is it worth paying more for premium diesel? 4 Jan 2023 (Ask HJ)
I have tried using premium diesel, in my 69 Reg Mercedes-Benz A-Class AMG Line Premium. It works out expensive compared to ordinary diesel, even after... -
I jet-washed under the bonnet of my car and it now won't start, what's the issue? 24 Mar 2018 (Ask HJ)
I was recommended to pressure wash under the bonnet of my 2003 Ford Focus prior to putting it up for sale. This was against my better judgement, but I... -
Mazda 6 Tourer - Why is the fuel economy so poor? 27 Jun 2016 (Ask HJ)
I'm disappointed with the fuel consumption of my Mazda 6 Tourer 2.2 diesel. I never see better than about 44mpg on motorway runs (400 miles in a weekend),... -
Peugeot Partner won't start 6 Jun 2016 (Ask HJ)
My Peugeot Partner van is struggling to start. It turns over okay, but takes ages to get going. When it does, it is very smoky and rough. I changed all... -
Volvo V70 - "Engine System Service" message 7 Feb 2016 (Ask HJ)
I have a 2006 Volvo V70 2.4 diesel and two weeks ago an "Engine System Service required" message appeared along with the yellow warning. I booked the car... -
Best small estate/MPV for £9000? 26 Sep 2014 (Ask HJ)
I need a medium sized estate or MPV with a flat access boot (for getting my wheelchair in and out easily). It must be an automatic as I do mainly urban,... -
Volkswagen engine problems 24 Jul 2014 (Ask HJ)
Over the years I have had a couple of Volkswagen twin charger problems. The first was a new Golf 160 TSI DSG. The car’s first 37,000 miles were problem... -
Why do car hire companies charge customers extra for fuel? 5 Oct 2013 (Ask HJ)
I recently returned from the US, having hired a car from Dollar at Los Angeles International Airport. I was charged for a full tank of fuel on collecting... -
Should I keep my Mercedes-Benz C-Class' tyre pressures high to improve fuel economy? 7 Sep 2013 (Ask HJ)
I have an 88,000 mile 2007 Mercedes-Benz C-Class diesel automatic estate, a lovely car. I normally follow the fuel filler flap advice and keep to 32F/33R... -
Why is my Nissan Primera automatic only returning 18-20 mpg? 7 Sep 2013 (Ask HJ)
I bought a 1999 Nissan Primera 2.0i automatic two years ago. It had 9000 genuine miles on the clock. The previous owner had ongoing health issues and the... -
How can fuel pumps be improved to prevent misfuelling? 19 Jan 2013 (Ask HJ)
I know it is my fault, but I filled my diesel Mercedes-Benz car with petrol, and landed myself with a bill for £730. Amazingly, the car travelled 75 miles...
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