The Cruze diesel may be rated at 47 but in the real world, they aren't getting it. I think it was Car and Driver did mostly hiway driving in their tests and got 44 mpgs. Any decently driven Focus gasser gets that, even my old one. Add the cost of diesel oil, diesel filters, cost of fuel and maintenance and this little car that should of, could be a nightmare- could be. I'm not real high on this particular engine. The sump is far too small for a diesel and I have a gut feeling that nitration is going to be an issue with this car- time will tell.
GM has shelved any diesel in the Silverado 1500. But they have a dandy 4.5 V8 diesel that is ready, tested and just needs current certs to get it into production. The baseline numbers are 300HP/450lbs torque. Actual numbers are not public. The projected fuel consumption would put it in the upper 20's. As you'll see in the coming years, Ford and GM are sharing transmission technologies and there will be new 8 and 9 speed autos in these units. The idea is to keep the engine running as free as possible to keep emissions down. The more gearing, the less stress and emissions. GM will be putting a diesel in the Colorado though. Considering the R&D GM has put into the Colorado, they should have changed the name. This should be a flawless introduction of this completely new design. It's nothing like the old Colorado but the folks are still going to think it's a junker.
The new 3.0 diesel in the Dodge/Jeep is not new. It's been running the roads in Europe for several years now. It's design is more in line with big rig diesels rather than the diesels found in current pickups. An example would be there are no main bearing caps and pistons are constant oil quenched, to name a few. This should be THE diesel to have. The auto trans in the Dodge/Jeep is made by ZF and is industrial strength. ZF makes transmissions for tugboats, ships, some large 18 wheelers, and high performance cars, so they know how to build strong. More than likely, it's the 8HP transmission that came out in 2009.