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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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After carrying out an oil change, the sump plug is leaking - could it be because I used a metal washer?

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Do I need to reset the ECU after having a new DPF fitted?

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DPF light keeps coming on after the emissions fix - did they do a botch job?

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What cars are still reliable over the 100,000 mile mark?

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What is the OEM specification for the engine oil in a 2016 Vauxhall Astra Sports Tourer 1.6 diesel?

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Am I better buying an older premium car than a newer, cheaper car if I intend to keep it for a while?

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