I put AdBlue in my diesel tank - why do manufacturers put the caps so close together?

I've accidentally put AdBlue in my diesel tank, which seems to be a really bad thing (possibly worse than petrol in a diesel car). Why do Renault put the filling caps so close together? It's a fundamental...

I read that engine oil is contaminated by the DPF in 4x4s - is this the case with all diesel cars?

I read in a recent 4x4 review that the engine oil is quickly contaminated by the DPF. Is this the case on all diesel engines with a DPF, and can it affect the life of the engine?

Why don't diesel cars come with an option to manually regenerate the DPF?

I'm interested in understanding why a driver cannot request their car to kick off a regeneration manually, for example, when they get on the motorway for a long journey. I have a Honda CR-V 2.2 with a...

How should I get rid of the soot in my DPF?

What's the best way to clean soot from a DPF?

The DPF light keeps coming on in my car, despite driving it properly - what do you think?

I bought a 2006 Hyundai Tucson in October 2017. The engine warning light was flashing when I test drove it and I was told that this was the DPF. I was aassured it would be fixed and it was okay when I...

Can I reject my secondhand diesel because the DPF light keeps coming on?

I’ve recently bought a used car on finance with a deposit of £1000. On day three of having the car (less than 50 miles later), the engine management light came on. I rang the dealership and took it in....

The DPF light has come on in my car despite doing lots of miles - why has this happened?

I have a 2008 BMW 3 Series Touring 3.0d. I do 20,000 miles per year on A roads, at high speeds, and change the oil and filter very regularly. A diesel particle filter warning light has now come on. Why...

I'm planning to buy a Volkswagen Touran that hasn't had the emissions fix - is this a good idea?

I'm planning to buy a 2012 Volkswagen Touran that hasn't had the emissions fix. Is it okay to buy the vehicle and not get the emissions fix? Will I be able to get on peacefully with it? It's done 52,000...

The oil is my BMW 3 Series is reading high - should I have it checked out?

The oil appears to be reading high in my diesel E90 BMW 3 Series, both via the dashboard indicator and also by manually checking (after driving approximately seven miles and leaving five minutes to cool)....

The DPF light has come on in my Audi Q3 - is this caused by the emissions update?

The DPF warning light has come on in my Audi Q3. It had the emissions update in March 2017. Audi have said that they will charge me £60 for diagnostics. If the problem is caused by the update then they...