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...

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...

Why does Volvo only make the 3-litre T6 as a diesel variant?

I have always been a Volvo fan and own currently a top-end 2002 Volvo 2.4T V70 that needs replacing. On looking around for a V70/XC70 replacement I find, to my utter disappointment, that below the 304PS...

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...

I would like to buy a new BMW 520 - should I get a petrol or diesel version?

It is now time to change from my nine-year old BMW 525 diesel. I am retired and do about 4000 miles per year. I do lots of short journeys of around seven miles, with very occasional longer trips. The dealer...

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...

My daughter put petrol in her Audi A3 TDI - should the fuel tank be flushed?

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....

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...