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Is a turbo 'whistle' a symptom of turbo failure?

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Just bought a 10 year old BMW that had an undisclosed engine issue - do I have any recourse for the £2500...

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The injector in my Mazda 3 has failed - is this due to using supermarket fuel?

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Is it usual for a belt tensioner to go off centre and shred the belt?

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Is there a known fault with the DSG on my 2012 Skoda Octavia?

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When should coolant be replaced?

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Our Ford Focus is leaking coolant - will Ford help pay for repairs?

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I changed the oil in my Ford Fiesta - why won't the turbo work now?

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