Compare BMW 4 Series parking sensor fitting or 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.

There are two types of parking sensors. Ultrasonic sensors emit high-frequency sound waves that bounce off objects, allowing the receiver to calculate how far away they are. Electromagnetic sensors work by creating an electromagnetic field around the vehicle and monitoring it for any disturbances. Both systems allow you to park more quickly and safely and give you greater confidence during difficult manoeuvres.

The most common reasons for parking sensor failure are bad wiring, dirt and debris, and a malfunctioning sensor. A specialist technician can advise you whether you need a parking sensor repair or entirely new parking sensors fitted.

Although some older cars do not come with parking sensors, most makes and models allow them to be installed. You could even install a parking sensor and camera to give you extra awareness of your surroundings.