BMWs 2.5 and 3.0 are great engines but like a lot of others have loads of wiring and sensors I run them for years and loved them they rev high and don`t sound like diesels,
Now another engine I like but some might disagree is a Kia Sedona 2.9 CDi out of the mk 1 with the rotary pump (not the common rail mk 2 ) the early one up to 2001 as a cable operated pump , they are a compact motor with steel sump , decent HP with plenty of torque, they are based on the merc sprinter engine.
My misses has got one of these for work since we got rid of the BMs, we have done about 35 k trouble free miles and it does about 40 mpg on the M way at 80 - 90 , I recently did a 250 mile round trip with a heavy car trailer to pick up a Mazda MX 7 (TOTAL WEIGHT OF NEARLY 2 TONNES + THE WEIGHT OF THE KIA ) it returned 38 MPG at a steady 65 and hardly felt the trailer.
Who can knock that, it would have to be mated to another G box as they are FWD but that should`nt be too much trouble.
If I had a Yank truck or van I would use one .