Have you noticed a rising oil level in the Mazda 6 due to a DPF fault?

I notice you were yet to be made aware of any DPF issues with Mazda Skyactiv diesels so I thought you might like see the attached which comes from the May 2013 issue of Diesel Car. Are you seeing any evidence...

Can you give me some advice on buying a used motorhome?

We are looking at a used motorhome. Most of what we are looking at seem to be based on a Fiat Ducato diesel chassis. In general, are there any older motorhomes that could suffer from Dual Mass Flywheel...

Can you recommend a medium car for short trips which will avoid DPF problems?

Could you recommend a reliable small to medium car or SUV for an average of 10,000 miles per year, primarily consisting of short journeys for a couple of OAPs? We wish to avoid expenses associated with...

Are diesel DPFs evolving to the point where problems are disappearing?

I was interested to read your recent comments about certain vehicle models appearing to be DPF trouble-free. Is this because they have markedly different systems for regeneration of the filter, or some...

Does my Volkswagen have a DPF?

I have recently moved from France to Guernsey and from reading your Daily Telegraph column am concerned about potential DPF problems due to low usage. However I am not sure if DPFs were fitted back in...

What's causing my Mondeo diesel to hesitate momentarily?

I have noticed while travelling between 50-70 mph that the engine of my Mondeo 1.6 TDCI seems to hesitate or cut-out momentarily, and then cut back in immediately without any dashboard indication. What...

Is a seven mile journey enough to allow my BMW 320d's DPF to regenerate?

I drive a BMW 320d and was interested in your response to the email from EJ, Market Rasen concerning the burning off of diesel particulates. What do you consider to be a short journey? I travel seven miles...

Why did Royal Mail buy Fiat diesel vans with DPFs?

My postman tells me that Royal Mail recently took delivery of new Fiat vans fitted with diesel particulate filters. Now postal workers on suburban stop-start 'walks' are sitting revving the engines to...

Is DPF technology improving in modern diesel cars?

A few days ago the BBC R4 ‘You & Yours’ programme had a feature on DPF problems. It said that the Salvation Army, which apparently runs 700 company cars, had stopped buying diesel models because of DPF...

Do you agree with this BMW service manager's views on DPF maintenance?

I had a very interesting chat with a service manager at BMW Battersea whilst collecting my car. I have a 12-month-old new model X3 3.0-litre diesel. I do a low mileage for a diesel (about 9000 miles a...