Ask Honest John

Most recently answered premium fuels questions
Can you tell me if I have been wasting my money putting Shell V-Power petrol into my Toyota Auris?
I have a Mondeo Titanium X 2.0 TDCI (130) doing an average of 38mpg on Tesco diesel. I have looked on your car-by-car guide but cannot find any information for the 130 variant for consumption. Is 38mpg...
I have a Honda Civic Hybrid (07). Do you think using a more expensive petrol would be better for my car than normal fuel?
My grandson is in the motor trade (a qualified technician) and is of the opinion that sole use of top grade fuel, eg Shell V-Power diesel, is damaging to the engine. Is there any truth in this?
Can I use BP Ultimate diesel in my Yeti? The DPF rules say no biodiesel. I understand that BP Ultimate is also biofuel-based?
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 on the accelerator. For the last month it is shaking...
For the last 30,000 miles I've run my 2001 Skoda Octavia 1.9 TDI with 110,000 miles mainly on Shell V-Power diesel. Having done a fairly fast run down the motorway and left it parked overnight, the next...
My W-reg Audi 1.8 Sport was bought new and has done 58,500 miles. I normally fill up with Shell V-Power following your advice and I like the improved smoother running with better pick-up from low revs....
I have recently bought a 2007 Honda Civic 1.8i ES, and have owned it for a week. I commute 40 miles a day to my workplace and, in an effort to keep fuel costs to a minimum, I try and be as delicate as...
My Peugeot 206 XSI 1.6 petrol has an anti-pollution fault and engine management fault light on the dashboard. It also went to reduced power with little or no acceleration available, but was able to drive...