Umm, perhaps you could get
Umm, perhaps you could get this your story right..
The ALL new ND MX-5 is the 4th generation NOT the 3rd, and as for your 'performance times', well you are REALLY showing your ignorance.
NA MX-5 (the lightest ever made) ONLY had a 1.6l engine, so it is slowest.
NB MX-5 had a 1.8l
NC MX-5 had a 2.0l, the most powerful n-a MX-5.
ND MX-5 (new one) had a DI 2.0l, and it's power to weight over the outgoing is actually less.
The 0.6 second difference is basically a gear change, have you compared ratio's, and yes the new ND is lighter that the NC Soft top.