How can you tell if your turbo has gone?

You can tell if your turbo has gone if you notice a significant loss of power or acceleration, unusual sounds like whining or grinding noises, or excessive exhaust smoke, particularly blue or black smoke. Additionally, if you observe a check engine light or a noticeable increase in engine oil consumption, these may also indicate turbocharger failure. It's also wise to check for any boost pressure leaks or abnormal sounds while the engine is running. If you suspect a problem, it's best to have a professional mechanic inspect it.