I bought this game a few days ago for my new PSP and I must say that it's good, but not great, in my opinion. The car dealership system is stupid. You have to wait forever for your favorites to show up and when they do there's no guarantee that your favorite model will appear from that manufacturer that particular day anyway!
On top of this disappointment I wish there was at least something to make me want to play. The driving challenges are fine, and play out exactly the same as the license tests in previous games, except the license tests had a point: you earned a license doing them. These are absolutely pointless, all they offer is credits for each one you complete, which you can get from racing anyway, so all they do is offer a side road to earn some income. The game runs at 60 frames per second, so would it really have been bogged down with the full 6 racers like in all the other Gran Turismo's, instead of the meager 4 cars on the track?
For the PSP the graphics are great, but it's not the best looking game on the system, and they are actually a complete joke compared to the first "screenshots" of this game years ago, which were actually just shots of GT4 with a watermark in the bottom corner saying "Gran Turismo:Mobile". I am thoroughly disappointed with this game, all it needed was a Gran Turismo mode and I would have been hooked for months. All fans of this series who bought a PSP mainly for this game in 2005 must be incredibly disappointed too.
I mean, there are so many features missing that it feels like a half finished game, which is amazing considering the time it took to finally make. Look what's missing:
No license tests or licenses to acquire.
No way of browsing through your garage. (Unless you are choosing a car for a race)
No way of buying upgrades for your car.
Only 4 cars on the track.
Some tracks from GT3 are missing.
No used car section.
Silly car dealership implementation.
No structured career or 'GT' mode.
So to recap, what this game is, is basically Gran Turismo: Prologue for the PSP. It has good visuals, decent sound but is severely lacking in game content. This wouldn't have been to hard to make into another classic Gran Turismo surely. People can already get GT1 and 2 working like a dream of the PSP and they are both fully fledged games, not just appetisers for GT5. To rectify all the mistakes that Polyphony have made in this empty shell of a game I think they need to put the first 2 GT's onto the Playstation store, so at least PSP owners can enjoy something that is actually a Gran Turismo game, not just a half completed racer.