The E36 M3 had some pretty big shoes to fill, being launched after the iconic E30 model. Most people overlooked the E36 when writing up their favorite M cars but this little Bimmer was and still is better than expected.
The Z3 M on the other hand was a limited edition run, being built for only 4 years and then discontinued. The Roadster version initially had the same engine as the E36 M3, the S50 unit. As for the Coupe models, they were fitted with the E46 M3 S54 engine for MY2001 and 2002.
Unfortunately, we don't really know what engines lay beneath the bonnets of the two car. From the looks of it, the E36 M3 seems to be post 1995 so a 3.2-liter, 316 HP unit might be lurking under there.
The Z3 M on the other hand give us no clue so it could also be fitted with the S50 engine or it might very well be sporting the S54 one, with 343 HP. However, the times recorded show the E36 as the winner so we'll have to assume that either the driver of the Z3 was pretty bad at what he was doing or that the car was built before the turn of the century and is using the same engine as the M3.
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