On the triple turbo version the turbo actuator is the chronic weak point, not the turbo itself. This system works with three turbos, so on one car up to three separate actuators can fail.

The symptom is a whistling or grinding noise from the turbos, limp mode under load, and power falling away in the upper rev range. Codes pointing to boost pressure appear in the fault memory.

Failures are reported between 60 000 and 120 000 miles, that is between roughly 96 000 and 193 000 kilometres. One thing is worth knowing: a specialist workshop can rebuild the actuator, and that costs far less than a complete turbo replacement. One repair comes to between 400 and 2500 pounds, while a complete turbo costs between 1800 and 3500 pounds each.

The triple turbo version is noticeably less reliable than the single or twin turbo variants: they do not have this failure pattern. If on such a car there is no actuator repair at all in the history past 100 000 miles, that is a bad sign, not a good one.