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?

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's the lowest rpm I could drop to in achieving good economy and a clean pick up?

I've just watched your Volkswagen Polo economy driving video. I recently bought a new Vauxhall Astra ST 1.4 150 T (i.e. same sort of small capacity turbo engine) which I run on Shell Nitro for low end...

Should I sell my 2006 Honda FR-V?

I own a 2006 Honda FR-V 2.2 CDTi from new and I've always used Shell fuel. It's had oil changes every 8,000 miles following your advice. Apart from a couple brake caliper changes and a shock absorber,...