Here is the situation as far as I know :
VW - CATIAV4 as core ProE for Powertrain
+ Audi
+ Porsche
+ Bentley
Daimler Chrysler - CATIA V4 as core
PSA (Renault+Peugot) CATIA V4 as core
Honda - CATIA V4 as core
Hyundai - CATIA V4 as core
Suzuki - CATIA V4 as core
Mitsibushi - CATIA V4 as core
BMW - CATIA V4 as core
Daewoo - CATIA V4 as core
Isuzu - CATIA V4 as core
Proton (Lotus) - CATIA
Kia - CATIA V4 as core
FIAT group used to have CATIA V4, but now with their cooperation with GM I am not sure.
Alfa - CATIA V4 ?
Ferrari - CATIA V4 ?
Maserati - CATIA V4 ?
The same applies to some of the FORD owned companies they all used CATIA V4 but what will happen I don't know
e.g. Landrover, Volvo
GM - Unigraphics as core
Fiat - Unigraphics
Ford - Ideas as core + Some CATIA now
Nissan - Ideas
Mazda - Ideas
Toyota - Caelum as core, going CATIA V5
Daihatsu - Their own as well
Looking at above you see a pattern :
CATIA V4 vs Unigraphics/IDEAS
Dassault/IBM EDS
There are realy no other competitors than CATIA and Unigraphics as core CAD systems. Their total market share is very equal with CATIA propably leading slighlty.
You don't see much of CATIA V5 mentioned in there. The reason I think is that Dassault is not going to get money by converting their V4 customers to V5. Instead they have directed their development resources in other areas than Automotive. One of their main focus areas for development of V5 was into shipbuilding, you will see a lot of modules in the V5 product portfolio for shipbuilding. (The new generation fast attack submarines was designed on CATIA)
The Toyota move to CATIA V5 is being planned to take 3-4 Years.
I disagree with the previous statements that the OEM's will start going for a range of CAD products. I believe the opposite is true. The Eldorado/Utopia of automotive design is to have a fully parametric car. You double click on the wheelbase distance and change it to get a longer car, the powertrain, all panels, interior of the car changes auto. The press tools for the panels changes, all jigs and fixtures changes, whole assembly line design change automatically and you have a new car in 3 months. This will not be possible if an OEM has three different CAD systems.
OK this is going to take a while to get to this ideal point, but we are on the way there. How do you think Chrysler is capable of bringing their prototypes so fast to the market (Viper, PT cruiser etc.) They design their prototypes fully on CATIA, got all the data then just press the manufacture button ;-)
The same thing applies to Mercedes, how do you think they are able to bring so many new and exciting vehicles to the market. These guys does almost everything on one CAD system (CATIA V4), body, powertrain, manufacturing plant etc. The hot thing at the moment is to have a complete virtual car, and for new models just to morph the existing designs.
What a mouthfull, I'll give you some rest now
Kind regards
Riaan