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Convertibles and roadsters with the best power-to-weight ratio

We ranked 24 convertibles and roadsters from the 1CARS catalog by power-to-weight ratio. The Ariel Atom leads with 391 kW/t (531 PS/t · 524 hp/t).

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Convertibles and roadsters with the best power-to-weight ratio

24 models
  1. 1. Ariel Atom Atom 4 · 2018–present 4 2.0 Turbo 391 kW/t531 PS/t · 524 hp/t Specs: Ariel Atom 4 2.0 Turbo
  2. 2. Porsche Carrera GT Carrera GT 980 · 2003–2006 5.7 l Carrera GT 326 kW/t443 PS/t · 437 hp/t Specs: Porsche Carrera GT 5.7 l Carrera GT
  3. 3. Ferrari 812 2017–2024 6.5 l GTS 325 kW/t442 PS/t · 436 hp/t Specs: Ferrari 812 6.5 l GTS
  4. 4. Lamborghini Gallardo Superleggera Gallardo · 2003–2013 5.2 l LP 570-4 Spyder Performante V10 282 kW/t384 PS/t · 378 hp/t Specs: Lamborghini Gallardo Superleggera 5.2 l LP 570-4 Spyder Performante V10
  5. 5. Ferrari Portofino 2017–2023 3.9 l V8 265 kW/t360 PS/t · 355 hp/t Specs: Ferrari Portofino 3.9 l V8
  6. 6. Mercedes-Benz SLS AMG SLS AMG (C197/R197) · 2010–2014 6.2 l 253 kW/t344 PS/t · 340 hp/t Specs: Mercedes-Benz SLS AMG 6.2 l
  7. 7. Dodge Viper Viper ZB I · 2003–2006 8.3 l SRT-10 V10 244 kW/t331 PS/t · 327 hp/t Specs: Dodge Viper 8.3 l SRT-10 V10
  8. 8. BMW M4 M4 (F82/F83) · 2014–2021 3.0 l Competition M-DCT 198 kW/t269 PS/t · 266 hp/t Specs: BMW M4 3.0 l Competition M-DCT
  9. 9. Porsche 911 Carrera Cabriolet 2014 3.8 l 196 kW/t266 PS/t · 263 hp/t Specs: Porsche 911 Carrera Cabriolet 3.8 l
  10. 10. Chevrolet Corvette Corvette C1 · 1953–1962 5.4 l 327 V8 fuel injection (SAE gross) 194 kW/t264 PS/t · 260 hp/t Specs: Chevrolet Corvette 5.4 l 327 V8 fuel injection (SAE gross)
  11. 11. Mercedes-Benz SL-Class SL-Class R231 · 2012–2020 4.7 l SL 500 185 kW/t251 PS/t · 248 hp/t Specs: Mercedes-Benz SL-Class 4.7 l SL 500
  12. 12. Lotus Elise Elise S2 · 2000–2010 1.8 l R / Elise S (2ZZ-GE) 179 kW/t243 PS/t · 240 hp/t Specs: Lotus Elise 1.8 l R / Elise S (2ZZ-GE)
  13. 13. BMW M3 M3 (E90/E92/E93) · 2007–2013 4.0 l V8 171 kW/t232 PS/t · 229 hp/t Specs: BMW M3 4.0 l V8
  14. 14. Tesla Roadster 2008–2012 Electric 165 kW/t224 PS/t · 221 hp/t Specs: Tesla Roadster Electric
  15. 15. Alfa Romeo 4C Spider 4C Spider 960 · 2015–2020 Base version 164 kW/t223 PS/t · 220 hp/t Specs: Alfa Romeo 4C Spider Base version
  16. 16. Caterham Seven Seven I · 1973–present 0.7 l 170 141 kW/t192 PS/t · 189 hp/t Specs: Caterham Seven 0.7 l 170
  17. 17. Jaguar E-Type E-Type Series 1–3 · 1961–1974 5.3 V12 Series 3 132 kW/t180 PS/t · 178 hp/t Specs: Jaguar E-Type 5.3 V12 Series 3
  18. 18. Maserati 3500 GT 1957–1964 3.5 l Tipo 101 117 kW/t160 PS/t · 157 hp/t Specs: Maserati 3500 GT 3.5 l Tipo 101
  19. 19. Ford Thunderbird Thunderbird XI · 2002–2005 3.9 l AJ-30 V8 110 kW/t149 PS/t · 147 hp/t Specs: Ford Thunderbird 3.9 l AJ-30 V8
  20. 20. Fiat 124 Spider 124 Spider I · 2016–2019 1.4 l Abarth 124 Spider manual 108 kW/t147 PS/t · 145 hp/t Specs: Fiat 124 Spider 1.4 l Abarth 124 Spider manual
  21. 21. Toyota MR2 MR2 ZZW30 · 1999–2007 1.8 l VVT-i (1ZZ-FE) manual 103 kW/t141 PS/t · 139 hp/t Specs: Toyota MR2 1.8 l VVT-i (1ZZ-FE) manual
  22. 22. Mazda MX-5 MX-5 ND · 2015–present 1.5 l Skyactiv-G 131 97 kW/t132 PS/t · 130 hp/t Specs: Mazda MX-5 1.5 l Skyactiv-G 131
  23. 23. BMW 507 1955–1959 3.2 l M507/1 83 kW/t112 PS/t · 111 hp/t Specs: BMW 507 3.2 l M507/1
  24. 24. Mercedes-Benz 190 SL 190 SL W121 BII · 1955–1963 1.9 l (M121 BII) 67 kW/t90 PS/t · 89 hp/t Specs: Mercedes-Benz 190 SL 1.9 l (M121 BII)

Method and data

Power-to-weight is the peak power of a version divided by its kerb weight from the same specification, in kilowatts per tonne. Each model appears once, with its best version. Makers measure weight differently (EU kerb weight includes a 75 kg driver, a dry weight has no fluids), so treat small gaps with caution. How we collect and check data

Ranked: 24 of 1,149 models in the 1CARS catalog have a figure for this list.

Not ranked: Devel Motors Devel Sixteen (649 kW/t) - concept car. Concept cars, prototypes, one-offs and racing cars stay out of the ranking; limited-run models are marked.

Download the full list (CSV) · Free to reuse under CC BY 4.0: credit “1CARS” and link to this page. Spot an error? Tell us - we check every report.

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More rankings

More rankings: convertibles and roadsters

Best power-to-weight in other classes

All convertibles and roadsters in the catalog

Questions and answers

Which convertible or roadster has the best power-to-weight ratio in the 1CARS catalog?

The Ariel Atom (Atom 4 · 2018–present), with 391 kW/t (531 PS/t · 524 hp/t). Second is the Porsche Carrera GT with 326 kW/t.

How is this ranking compiled?

Power-to-weight is the peak power of a version divided by its kerb weight from the same specification, in kilowatts per tonne. Each model appears once, with its best version. Makers measure weight differently (EU kerb weight includes a 75 kg driver, a dry weight has no fluids), so treat small gaps with caution.

Why is a model missing from the list?

A model is listed only when the 1CARS catalog has a confirmed figure for it. Models without an official figure stay out instead of getting an estimate, and the list grows as we add data. Concept cars, prototypes, one-offs and racing cars are not ranked; limited-run models are marked.