General exprience over many users has found for Stop/Start disable options:
ICE drivetrains - D-series and T-series (not T8 PHEV) Sensus cars - use 271 "02 button...memory" setting. The function is already there to turn Start/stop off, this should enable the "memory" of the setting across starts in the default Comfort mode. This option is enabled from the factory on US cars, from about 2019-up.
Mild Hybrid - The B-series, mostly newer Android based cars - use 271 "03 No button...always off" setting. This will disable start/stop totally on these cars where it was not possible to disable it at all. B5/B6 this works great, but it seems the B4 drivetrain with the DCT, it has been reported that it does not work.
ICE drivetrains - D-series and T-series (not T8 PHEV) Sensus cars - use 271 "02 button...memory" setting. The function is already there to turn Start/stop off, this should enable the "memory" of the setting across starts in the default Comfort mode. This option is enabled from the factory on US cars, from about 2019-up.
Mild Hybrid - The B-series, mostly newer Android based cars - use 271 "03 No button...always off" setting. This will disable start/stop totally on these cars where it was not possible to disable it at all. B5/B6 this works great, but it seems the B4 drivetrain with the DCT, it has been reported that it does not work.