Difference between xxx35d and xxx40d?

[edb49]

From BMW's site today:

X5 30d = 245bhp
X5 40d = 306bhp

530d = 245bhp
535d = 299bhp

330d = 245bhp
335d = 286bhp


The 30d all seem to be the same output, so I guess they're identical engines. However the next diesel up is a different output on each model. And on the X5 it's called a 40d instead of 35d, but only a marginal increase in power on the 535d.

Does anyone know the differences?

[edb49]

Remagel2507 said:

As far as I know the 40d engine is a 3.0 Single Turbo unit while the 35d engine is the more familiar 3.0 twin turbo unit.

Interesting... so the 40d is the 30d with a remap?

[edb49]

Remagel2507 said:

As far as I know the 40d engine is a 3.0 Single Turbo unit while the 35d engine is the more familiar 3.0 twin turbo unit.

Just checked the BMW site, and it states:

"Twin turbochargers with variable turbine geometry"

So the 40d is a twin tubby unit.