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

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

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

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

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

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

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

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The DPF on my BMW 5 Series is blocked - can I add something to clean it?

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