Ask Honest John

Most recently answered misfuelling questions
I accidentally put 6.3 litres of petrol into my diesel Ford S-MAX. The car has since been towed home. Should I fill it up with diesel to dilute the petrol, or simply pay a firm to drain it?
I have a diesel Jaguar XF. When refuelling I put in just over a litre of unleaded before realising my mistake. I then put in 25 litres of diesel. I drove home without a problem (about 20 miles). Will I...
I've filled my Jaguar XF S diesel with the wrong fuel, using petrol instead of diesel. The car was driven for about 0.5 of a mile before it stopped. My local Jaguar dealer is quoting £8000 to replace the...
I rather stupidly filled up my 2004 Mercedes ML 270 CDI with petrol. Yes, and I drove it before it cut out and wouldn't start. What can I expect the damage to be and what will MB rush me for this, as the...
My father-in-law recently filled his 2010 Mazda 6 diesel with petrol. After driving up the road, the car stopped and wouldn't restart. He was towed into a Mazda main dealer and the fuel has been drained....
I filled my Mercedes-Benz C250 with petrol instead of diesel. I realised when the engine began to falter after about 25 miles and stopped the car. Mercedes-Benz recovered the car and took it to their Norwich...
I went to pick up a Ford Focus 2012 diesel from the garage only to find it had been filled it up with three gallons of petrol. It went for five miles then refused to start. The garage has taken it away...
My daughter, having recently exchanged her car for an Audi A3 2.0 TDI, made the mistake of filling the car with petrol. The car was taken as instructed by her insurers/breakdown company to a non-Audi garage....
I recently filled the tank of my diesel Mercedes-Benz E-Class with petrol. Although there are no legal requirements, I feel Sainsbury's garage owe me some duty of care, as the pump dispensing the petrol...
I've put eight litres of petrol in my 2.0 diesel Peugeot 307. The car is 51 plate. The tank was in the red, I wasn't paying attention. When I noticed I then topped it up with 46 litres of diesel. The...