Compare BMW 4 Series turbo fault repair or replacement quotes from specialist garages

Looming hundreds of feet up in Munich's skyline is BMW's headquarters, a vast and impressive building designed to look like four engine cylinders - the configuration that drove much of the brand's early success.

BMW has come a long way since 1927, when it produced its first car, the Dixi, shortly to be renamed the BMW 3/15. In 2022, it was awarded 'Best Manufacturer' at the AutoCar Britain's Best Car Awards, and the same year, it triumphed at the WhatCar? Awards, winning more accolades than any other brand. The M5 special edition, celebrating 20 years of BMW motorsport, is one of the rarest M automobiles in the world.

See how BMW's maintenance prices compare to Audi and Mercedes in this guide.

Turbochargers, usually called turbos, are designed to give your car extra power. They are only activated at certain speeds and work by forcing more air into the engine, increasing the strength of the combustion. You can read more about how turbochargers work here.

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 these 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 car.