Turbo lag on a 2011 X5 35d

[JCL]

I think there is a risk that all types of perceived lag are being collectively labelled 'turbo lag' in this thread.

There can be a diesel lag, nothing to do with the turbos, but simply due to lack of torque immediately off idle. Those who have driven lots of diesels have a slightly different driving technique, as described above. There is terrific torque as soon as it is above idle.

There can be throttle lag, check the posts about throttle response issues due to the drive by wire programming, before there ever was a diesel model in North America.

There can be automatic transmission response issues, we have enough threads about that, on all models.

There will be slower acceleration from a standstill compared to a car that weighs 1000 lbs less, due to physics.

I think all of the above can get mixed together when the phrase turbo lag is used.