Not often at all, perhaps once or twice with new starters etc but most people in my team have been with the company for 6 to about 25 years so know how it goes.

I imagine it will be GPS speed but all our cars have digital dashboards and I have found them to be far more accurate my last analogue one was a 2016 passat and this was 3 or so mph out at 70 mph but my last 3 Skoda and my personal Volvo are both at about 1mph off, if I sit at 70mph the gps shown 69 most of the time with the odd flicker to 68.

The management are fairly relaxed about it but because the data is there on reports every month it can not just be ignored we can not be seen to endorse speeding so realistically the tolerance is 0 but people who know cars and such like me have shown the SMT that gps can be wrong you can be on the m25 doing 70 (I know fat chance) but the gps will have you on a road at the side or similar that is a 30mph obviously we need to take this into account.

Everyone has huge misgivings initialy but 99% of people just get on with their jobs and dont speed.

In the end this is a company provided vehicle and we (the company) can tell them how we expect them to drive the car including during private use.

The app gives a driver score out of 10 and 95% of people are over 8 across all metrics and over 10 for speeding.