What fuel should I use to keep my 10 year old Toyota Avensis running?

You mention that supermarket petrol can clog up engines and reduce MPG from the deposits in their additives. I understand that it's best to use branded super unleaded. Is it the case that branded normal...

Do you recommend using a higher grade petrol like Shell V-Power?

Having read your columns for many years I notice how you advocate the regular use of higher grade petrol. I have a Skoda Octavia Scout 1.8 TSI and inside the fuel door there is a label that says use 95...

Does the DPF warning light in my pickup truck mean it's regenerating?

My daughter has bought a three year old Isuzu pickup truck with only 12,000 miles on the clock. The DPF light keeps coming on, the main dealer says that this is normal because it shows that the regeneration...

Is EGR failure a common issue after the emissions update?

Soon after the emissions update our Skoda Yeti 2.0 TDL had to have a new ERG recirculating valve fitted at huge expense. Luckily, we we covered but this cover has now expired. The warning light has come...

Can I do anything to improve the fuel economy after the emission update?

My Skoda Yeti 2.0 TDI had the emissions update six months ago. I have since discovered a drop of 6.5mpg. Skoda say they cannot do anything, can anyone help please?

Is there a known issue with blocked injectors in the Citroen DS4?

I have a 2011 Citroen DS4, purchased two years ago. Since January, the engine light keeps coming on and the car will go into limp mode. I had the emissions filter 'fixed' in January by the dealer from...

Does the start/stop mechanism and premium fuel effect the regeneration process?

I stumbled across a couple of issues which seem to do the rounds on various forums, so I thought I'd ask here for a definite answer. One is that the Start-Stop mechanism, as implemented in the Audi A6...

What estate should I buy to replace my Citroen C5 Tourer?

I am looking to replace my 2009 Citroen C5 VTR+ Tourer 140 HDI with one that is 2 or 3 years old. I travel 8000 miles a year, 30% in town and the balance on motorways. I recently started using Millers...

Why is my Hyundai i20 mpg so much lower than expected?

My 2012 Hyundai i20 1.2, 41,000 miles on the clock is quoted an average of 57.6 mpg. Your website suggests that the real average mpg for this make and model is 46.9 mpg, but I’m averaging only 39 mpg!...

Would the advantages of V-Power fuel be felt in a 13 year-old car?

I've seen you recommend V-Power fuel multiple times and seen the reasons why - but I've always been told that if a car is regularly run on a lower grade of fuel (for example always supermarket fuel) then...