Why is the regeneration not clearing the DPF warning on my car?

I have a risk of particle filter blocking warning showing up. Why is the regeneration not clearing it even after a long run at high speed?

I've just bought a secondhand engine off eBay - what would you suggest needs replacing?

I have just purchased a secondhand Citroen C5 engine from eBay with 73,000 miles on the clock. Apart from a new cambelt, would you recommend anything else needs replacing at this stage?

I had my windscreen replaced and now the lane departure system doesn't work - what's the issue?

I recently hit a bird, which necessitated a new windscreen for my Audi SQ5 as a mater of urgency. I ordered a replacement to be fitted by Auto Windscreens online. However, I got a call the next day saying...

Why does our Honda CR-V emit black smoke when we accelerate?

I have a 2009 Honda CR-V CDT-i with 60,000 miles on the clock. Under heavy acceleration there is black smoke out the exhaust - a fair amount. We have done 5000 miles in the five months since buying it...

Our BMW 1 Series is showing a DPF light - is this because we only use it for short journeys?

I recently bought my son a BMW 1 Series for his 18th birthday. Soon after the filter light came on. We took it to a garage to be looked at and the turbo was burnt out, so had to be replaced. We also had...

Should I have to pay a diagnostic fee on a car I've only had for a week?

I bought a Toyota Auris from a main Toyota dealer a week ago. The car is a 16 plate, with only seven miles on the clock when I bought it. The car was a Toyota fleet car, so was unused for over a year....

Should the fan run continually when the engine is running or only when coolant reaches a certain temperature?

Should the fan run continually when the engine is running or only when coolant reaches a certain temperature?

What can I do about the corrosion around the door panels on my Land Rover Defender?

When I have my Land Rover Defender re-sprayed, what can be done about the aluminium corrosion on the door panels and round rivets?

Do I have to take my car to a main dealer to keep the warranty intact?

I've just bought a new Volkswagen Golf. Do I have to take it to a Volkswagen dealer for servicing or can I take it to my local garage as long it's stamped and they use Volkswagen parts?

Do I need anything else replaced when a cam belt is changed?

I have a 2009 Renault Clio, which has done 3500 miles. According to Renault, it needs a new cam belt. They recommend that the tensioner and the water pump should be replaced, but nothing else needs done....