CRDi are not only more powerful now but with the introduction of the VGT, Variable Geometry Turbine mas lumakas pa sila. Imagine a CRDi 2.5 turbo-intercooler with around 140-145hp and on it's generation now with a VGT it's packing nearly 180hp on stock with the same fuel displacement.

I even know of CRDi vehicles with VGT that is just 1.8- 2.0 liters but already packs 185hp.