So, in my quest for a realistic offline experience playing with the F Vintage, F Retros and F Classics, the last piece of the jigsaw I seek is the correct level of attrition in races. It would be great in my 20-30 lap races to have maybe a third to half of the cars break down. This can only be achieved by changing the LifetimeAvg and LifetimeVar values in the engine.ini, the game code randomly producing brake, engine, suspension and lastly, gearbox failures. It works brilliantly apart from the gearbox failures, which result in the AI driver doing the rest of the race on the rev limiter stuck in whichever gear they are in, which spoils the race for the other cars. With the other types of failure they quickly leave the track. I have tried modifying the Hyperwearthreshold and instantblowup values in the engine.Ini file to have them blow their engines after driving on the rev limiter stuck in gear, but these only affect the player it seems. @Renato Simioni would it be possible for you to either.. A) Make the Hyperwearthreshold and instantblowup values affect the AI (so my workaround works) ? B) Have a look 'under the hood' and remove gearbox failures from the game's failure generation code? The second option would probably be easier and require less testing.. Thanks for your time reading this, and thanks for all you have done so far making this sim head and shoulders above the rest! Happy holidays!