Our postal vans keep breaking down with DPF faults - do you have any comment?

As a keen reader of your columns in the Saturday Telegraph, I am well aware of the pitfalls of operating a modern diesel for short journeys. Our local postmen have been subjected to new "modern" work methods,...

My BMW 635d smells unpleasant - is this the DPF regenerating?

My 3-year-old BMW 635d occasionally produces an unpleasant smell from underneath. This can best be described as being like 'burning rubber' or 'dead mouse'. It is the only problem with an otherwise perfect...

How often do I need to take a DPF-equipped diesel for a long run?

We are looking to buy a diesel estate but have had conflicting advice on how often you have to take them out for longer, faster drives to avoid problems with DPFs. Is it twice a month or every couple of...

What do you think of the new 3 Series BMW?

I would welcome your advice as I want to replace my BMW 525d SE auto touring (E61), which I purchased new in 2005, with a smaller estate or hatchback, either diesel or petrol. Having had 10 BMWs on the...

Which 4WD vehicle for accessing tracks and green lanes?

I live half a mile off tarmac along forestry track and green lane. I have managed for 35 years with 2WD but the pattern of recent winters and regular snow seems to be set to last. Presently, I make do...

Which small family car with a diesel engine?

We have a 2-year-old and another on the way, so are looking to purchase a diesel (used mostly as a family runabout with the odd commute) for less than £4000. But it'll be the wife driving most of the time,...

Should I buy a used diesel?

I have driven Volvos with tremendous satisfaction since 1970, currently a V70 diesel estate, but now at 82 I am finding it difficult to get in and out of, mainly due to the low profile of modern cars these...

Citroen C8 additive warning light

I have just acquired a Citroen C8 and a warning came up on the panel that the diesel additive needed attention, and to get a local dealer to look at it.

Which fuel additives can I use in my Audi TDi?

When I looked up the Platinum Plus additive on Google it threw up several other additives also. All claimed to decrease fuel consumption, give smoother running and aid the DPF. Those mentioned were; Millers...

Which SUV for a school run?

I'm looking for a second-hand SUV for my wife to do the school run in. I don't want to spend a fortune but want something comfortable that is not thirsty. What do you think about a 2005 Volvo XC 90 2.5T...