AC cars with highest power to weight ratio

Most accurate predictor of acceleration is power to weight ratio. The more power engine can produce and the less mass it has to accelerate, the quicker the acceleration.

For low speed acceleration and acceleration from standstill, traction also plays important role. Aerodynamic drag takes over as dominating factor at high speed.

Everything in between is where power to weight ratio matters the most. Mid-range acceleration is also important for track performance.

#	make & model	Hp/tonne▼
1.	2009 AC Cobra MK VI GTSR	784
2.	2026 AC Cobra GT Super Sport	707
3.	2010 AC Cobra GTS	623
4.	2009 AC Cobra MK VI GT Big Block	610
5.	2020 AC Cobra Series 4 Electric	583
6.	1994 AC Cobra MK III 460 Street Competition	581
7.	2027 AC Cobra GT Coupe	497
8.	2020 AC Cobra Series 3 Electric	495
9.	2001 AC Mamba Coupe	481
10.	2025 AC Cobra GTS	474
11.	2017 AC Cobra 378	472
12.	2000 AC Cobra 212 S/C	389
13.	2020 AC Cobra Series 2 Electric	359
14.	1966 AC Cobra 427	357
15.	1962 AC Shelby Cobra 260	348
16.	2025 AC Ace	345
17.	1957 AC Ace Corvace	344
18.	2020 AC Ace RS Electric	344
19.	2023 AC Cobra GT	329
20.	1992 AC Cobra Lightweight 5.0	300
21.	2012 AC 378 GT Zagato	292
22.	1963 AC Cobra 289	277
23.	1965 AC 428 Convertible	233
24.	1999 AC Ace 5.0 V8	231
25.	1961 AC Ace RS	231
26.	1953 AC Ace 2.6	215
27.	1998 AC Cobra 302 CRS	214
28.	1998 AC Aceca	214
29.	2020 AC Cobra Series 1 Electric	192
30.	1993 AC Ace Brooklands	183
31.	1956 AC Aceca Ghia-Aigle	162
32.	1957 AC Ace Bristol Zagato	136
33.	1973 AC 3000ME	136
34.	1960 AC Aceca Bristol	126
35.	1959 AC Greyhound	100
36.	1971 AC Model 70 Invacar	99
37.	1955 AC Aceca	92
38.	1932 AC 16/90	74
39.	1929 AC Acedes-Magna Tourer	64
40.	1932 AC 16/80	60