What is causing my Citroen C5 to run roughly?

The night before last I drove, with a friend, to a meeting about 10 miles away in my recently-purchased Citroen 2008 C5 2.0 HDI 138 Automatic, 61,000 miles on the clock. Three hours later, when I switched...

Who is responsible for causing 'fuel gloop' in my Hyundai i40?

My 14-month-old Hyundai i40 'died' on my way to work on 17 January. There followed a long saga of recovery and the problem was finally diagnosed as frozen water content in the fuel, which turned the diesel...

Why don't fuel companies try to prevent people using the wrong fuel?

There is not a month goes by without someone telling me how they have inadvertently filled their vehicle with the incorrect fuel, and the resultant eye-watering costs to fix. Why couldn't the fuel companies...

Could an electrical fault be causing power loss in my son's Volkswagen Polo?

My son’s Volkswagen Polo gave us some trouble on the return journey form holiday last week. After running for about 80 miles the engine suddenly lost all power (just as if the engine was suffering from...

What could be causing this fuel supply problem with my Honda?

Our car was pre-registered but had only four miles on the clock when purchased. It had been left on the forecourt, presumably in the cold, but gave no immediate problem. The dealer has been very good as...

Should I use diesel fuel that has been stored for four years?

I always keep a couple of gallons of diesel as a stand by, but have not used it for about four years. Can I use it now or is there a limited time before it deteriorates?

My Ford Mondeo struggles to start and then produces white smoke. What's wrong?

I've got a Ford Mondeo Mk3 2.0 TDI. It lost all power and then produced white smoke, then it stalled and would not start again. When it cooled down it started, but was very lumpy and with smoke, then stalled...

Do all Suzuki Swifts jolt when driving slowly?

I have a 2009 Suzuki Swift 1.5-litre which is jolty when driving slowly in traffic. Is this the drive train resistance, is it a fault with the design or is it a problem with my clutch? My dealer told me...

Does my Peugeot 306TD have a turbo fault?

Can someone offer advice about my Peugeot 306TD? The car starts first time and runs well, with no misfiring or whistles, but there is no turbo effect whatsoever. When you floor the throttle the motor gradually...

My Volkswagen Golf has lost power after I changed an injector - why?

I recently replaced my Volkswagen Golf TDi's head gasket because I had a water leak. Prior to this I had a problem with misfiring and replaced injector two, because it came up on the scanner. Since replacing...