Originally Posted by Champ R
If this was the 3.0 liter Z4 model, its about as fast as the s2000, but has more torque due to the larger motor. If it was the newer M roadster (00-03), they come with a 3.2 liter 315hp motor, which is very quick.
You're right that they had the 315 hp motor, but that version was only available in 2001-2002. (It weighed 3131 pounds, so it was reasonably quick.) The 1998-2000 version had 240 hp and there was no 2003 version.
Remember, like most VTEC cars, the S2000 has a gearing advantage that compensates for its torque disadvantage. You can read more about why this is important
here. (The S2000 also weighs 300+ pounds less than the M Roadster.)