Ratings

ok so i love this game alot been on it since 6am lol
but i don't understand some of the ratings or what a good rating would be can so1 explain thanks
Economy is in lb/hph clearly lower the better but what a good reading for say a 1.8
Lifespan is in Mrev is this million rev's? i guess higher the better again whats a good reading? what would a average saloon car be expected to do over the course of its say 120k life?
Loudness I'm guessing this is in DB so i know say a normal track day limit in the uk is around 100db again what would your average saloon car be?
Responsiveness dunno if this is measured in anything, but again whats a good reading?
Smothness and last but not least my readings for this 1 are very low or seem it? i mean is 32 good?
thanks for any help with this i know quite a large amount about cars and work in a engine factory but these 1's are baffling me and I'm sure others as well maybe a sticky or tutorial for the test bed could be made.
but i don't understand some of the ratings or what a good rating would be can so1 explain thanks
Economy is in lb/hph clearly lower the better but what a good reading for say a 1.8
Lifespan is in Mrev is this million rev's? i guess higher the better again whats a good reading? what would a average saloon car be expected to do over the course of its say 120k life?
Loudness I'm guessing this is in DB so i know say a normal track day limit in the uk is around 100db again what would your average saloon car be?
Responsiveness dunno if this is measured in anything, but again whats a good reading?
Smothness and last but not least my readings for this 1 are very low or seem it? i mean is 32 good?
thanks for any help with this i know quite a large amount about cars and work in a engine factory but these 1's are baffling me and I'm sure others as well maybe a sticky or tutorial for the test bed could be made.