Way Motor Works has the Scangauge II's with custom MINI programming available. If you have been wanting to add gauges to your MINI this is the most cost effective way and easiest to install.
WMW recommends these for everyone just to have an accurate coolant temp gauge as it's saved numerous customers from overheating.
Another big advantage the Scangauge brings is Oil Pressure readout for 2011+ MINIs with N18 engines and F56 MINIs.
Here are the other MINI specific gauges programmed on our Scangauge II:

EOT - Engine Oil Temperature (Degrees Fahrenheit)
OPR - Engine Oil Pressure (PSI)
GAL - Fuel Tank Level (Gallons)
FLT - Fuel Temperature (Degrees Fahrenheit)
PSI - Fuel Rail Pressure (PSI)
FAN - Electric Fan (%)
A/F - Air To Fuel Ratio
TF1 - Transmission Fluid Temperature 1 (Degrees Fahrenheit)
TF2 - Transmission Fluid Temperature 2 (Degrees Fahrenheit)
TIS - Transmission Input Speed (RPM)
TOS - Transmission Output Speed (RPM)
TRQ - Actual Torque (ft-lbs)

https://www.waymotorworks.com/scangauge-ii.html