Compare BMW 4 Series electrical fault repair 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.

A car's electrical system has many components, including the starter motor, battery, alternator, indicators, lights, radio, power steering and heater. The battery stores electricity generated by the alternator and sends it to the vehicle's ancillary circuits.

Car electrical problems can vary greatly, from loose wires and faulty fuse boxes to starter problems, so it is difficult to know what is wrong without the help of a knowledgeable car electrician.

If your car doesn't crank properly, its headlights aren't working as they should, fuses keep blowing, or your battery dies, these are all signs your car's electrical system is failing.

Find out what to do when your car battery dies in this guide.

Some issues, such as a loose spark plug repair, are easy and cheap to fix, whereas an alternator replacement may be more costly. The good news is that mobile auto electricians will come to you if you can't get your car to a garage.