Turbochargers, usually called turbos, are designed to give your BMW extra power. They are only activated at certain speeds and work by forcing more air into the engine, increasing the strength of the combustion.
Common signs of turbo failure include a loss of power, difficulty maintaining high speeds, slower acceleration, grey/blue exhaust smoke, and a dashboard warning light.
If your car shows any of the above symptoms, you may need to book a turbo repair. In some cases, a repair may not be possible, in which case a turbo replacement is required.
Turbo reconditioning or turbo refurbishment is a restorative process that gives older turbos a new lease of life. If you need to replace your turbo, opting for a refurbished rather than a brand-new one is usually cheaper. Consult a turbo specialist for advice about the best option for your BMW.