It always pays to be clued-up on why and when smoke could be pouring out of your exhaust – this quick read explains it all.

If you see different colored exhaust fumes it’s time to pay attention to your car ... smoke means the engine is burning too ...

When a diesel-engined car is only used for short journeys, the DPF regeneration doesn't take place properly causing soot to block the filters and preventing the engine from running ... older diesels ...

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