► Mercedes Track Pace app tested 
► In GT Four Door, A45 S and EQS
► Is it worth having? 

Having a car with north of 500bhp, all-wheel drive and rear-wheel steering is great – but when do you ever get to unlock that performance? That’s the question and challenge Mercedes-AMG has been working at for the last few years now – and the latest iteration of its Track Pace may be its best answer yet. 

Designed purely for track use – as the name suggests – the new app brings a level of telemetry and analysis previously only available with Racelogic boxes and higher-end kit. The idea is to give the driver a clearer, more detailed look at their inputs without any third-party hardware, helping them improve their speed and technique in leaps and bounds. That’s the idea anyway. To find out if it actually works, we tried out the Track Pace app in a range of current AMG products, from a fizzy A45 S to the four-door rocket ship GT63 S.

Different cars, different flavours

Car infotainment is a rapidly changing space, and as Mercedes and other brands look to stay one step ahead of their competitors, they constantly update the UI and systems behind those ever-growing touchscreens. Throw in the different levels of infotainment depending on the model, and the AMG range’s infotainment offerings vary more than you’d think. 

That means that the Track Pace app experience in an EQS, for instance, differs from the one in an A45 S for…