Hi All Before i go any further i am not trying to say that my 170 Quattro is faster than an S3 I know it is not! I am just interested on how Audi's faster A3 Diesel matches up against there S3 Petrol, in a real scenario race. Tech data 170 Quattro - 170BHP (some say 180) - 258lbs foot torque - 0-60 in 7.9 seconds S3 - 265BHP - also 258lbs foot torque - 0-60 in 5.7 Seconds. Now say these two cars are in a 30 zone both sitting side beside at there optimum gear for accelerating. They enter a 70 limit and accelerate. How far apart would are they when the first car (guessing S3) would brake the national speed limit? Also if they kept going lets say till the S3 got to 120mph how fast would the 170 TDi be going? Now I have never driven an S3 but i do know that my 170 is so much quicker at this stuff than my old 130. When the Turbo kicks in you get that proper thump in the back that you would expect from a Petrol Turbo. Has any one driven both cars got an opinion?