Which is faster?

The Porsche 991.1 GT3 is faster — 1.2s quicker on average across 6 shared tracks.

Specifications

Specifications	Porsche 991.1 GT3 991.1 GT3	Ariel Atom 3 Atom 3
Model Years	2014-2016	2008-2016
horsepower	475	245
torque (N_M)	439	210
weight (KG)	1,430	462
Power to Weight	0.33	0.53
Rank	#35	#31
Tire	180 PILOT SPORT CUP 2 245/35/20 / 305/30/20	100 R888 195/50/15 / 225/45/16
engine Description	3.8 l DFI (Direct Fuel Injection) flat-six engine	In-line 4-cyl, 1998cc
gearbox	6MT	6-SPEED MANUAL
drive Type	RWD	RWD
wheelbase (MM)	2456	2344
width (MM)	1852	1798
length (MM)	4545	3404
height (MM)	1269	1194
0 - 60 MPH	4 SECs	3.2 SECs
top Speed (KPH)	315	241
price MSRP	$ 151,000	$ 64,500
Current Value	$ 160,000	$ 55,000
OVERALL VS AVERAGE LAP TIMES	-7.27s	-6.1s