Hallo,
I have one question.
I've had some kind of tweak and I tried it and it happend that now, everytime i am going (no matter in wich car) when i get to someting about 3/4 of track, my engine loose rpm's and dies. When I hit the spacebar to restart car, suddenly, same thing again, i have to restart the race and then when i try it again... it happens again, what is wrong?

ur just not out of gas ??

Haha, fuel is free! Fill 'em up!

Garage > Info > Fuel Load at Start > [in % of fuel tank capacity]
Or fill up via a pit stop (change the % of fuel to add in pit stop via the F12 menu/pit instructions).

Don't use diesel!