Which is faster?

The Mazda Miata MX-5 NC is faster — 12.9s quicker on average across 3 shared tracks.

Specifications

Specifications	Mazda Miata MX-5 NC Miata MX-5 NC	BMW Z4 Roadster E85 2.5i Z4 Roadster E85 2.5i
Model Years	2005-2015	2005
horsepower	172	184
torque (N_M)	187	237
weight (KG)	1,155	1,349
Power to Weight	0.15	0.14
Rank	#254	-
Tire	340 EXTREMECONTACT DW 205/45/17	140 R050 225/50/16
engine Description	2.0 L (120 cu in) MZR LF-VE DOHC I4	2.5L NA I6 (N52B25 )
gearbox	6-SPEED MANUAL	5-SPEED MANUAL
drive Type	RWD	RWD
wheelbase (MM)	2330	2494
width (MM)	1720	1781
length (MM)	3995	4092
height (MM)	1245	1298
0 - 60 MPH	6.4 SECs	7 SECs
top Speed (KPH)	211	249
price MSRP	$ 25,095	$ 34,800
Current Value	$ 18,000	$ 14,000
OVERALL VS AVERAGE LAP TIMES	+4.17s	+13.85s