The engine/exhaust sounds for the GT series have slowly improved over the years but certainly no leaps and for the vast majority of vehicles not true to life. It seems that the PD sound engineers have a method to capture sound that in my book is not the best way, and using this method they have optimised over the years to what we have now with small improvements for various car models but again not to the extent that is close enough to reality to satisfy the members like me who want to HEAR the car as it should sound.
It has not been mentioned in this thread but has been mentioned in many others that the best way to capture the sound of a vehicle is by strapping it to an outdoor dyno. A mic near the exhaust (but not too close), one on the bonnet, interior and anywhere else you wish to record for the purpose of different in-game cam views. Using this method all of the vehicles intricate sounds can be recorded either on load of off or coast down etc. It is really that simple. I have cam vids of my Motorbike on a dyno recorded from a crappy mobile phone, and when watching on my TV using my 5.1 amp or just the TV speakers for playback, it sounds awesome on either so what is the problem I ask?
As for PS3 hardware...please!! I thought the ps3 can stream lossless codec audio @ very high bit rates? I was watching a crappy episode of some girly show with my GF on the PS3, the sound was 2.0 MP3 and @ 128kpps and there was a scene where a car of some sort put his foot down, it sounded real enough to me. What is the bitrate of DTS HD Master Audio...is it something like 24mbits per second? Point I am making is even low bit rate sound recordings can sound good as it is all about how it is recorded so with PD I am almost certain that the incorrect engine/exhaust sounds has nothing to do with Bandwidth constraints even if for 16 cars. It is all down to the recording method in the first place. Besided current compressing tech is very good, it is hard to tell the differents between high bitrate MP3 (512kpps) vs lossless codecs etc.
Come on PD lets see the same attention to detail in the sound department.