Mercedes Parktronic is the manufacturer’s brand name for the tried and tested parking sensors common in modern cars – the familiar ‘bleepers’ that warn you if you’re getting too close to an obstacle. In more recent times the technology has evolved into ‘Active Parking Assist with Parktronic’ to take a more automated role in helping you park safely. In common with similar systems used by other manufacturers, it can detect suitable parking spaces, displaying a blue ‘P’ symbol on the dash when it has done so. You need to be travelling at less than 20mph for it to work and, once it has found a space, you can engage reverse and the vehicle will steer itself into space automatically while you control the accelerator and brake.