BMW i8 Roadster (2018 – 2020) vs Porsche 911 Carrera 4S Cabriolet (2018 – 2025): specs compared
The Porsche 911 Carrera 4S Cabriolet is the more powerful of the two, with up to 450 hp against 374 hp. It is quicker, reaching 100 km/h in 3.7 s against 4.6 s. It has the higher top speed: 304 km/h against 249 km/h. The BMW i8 Roadster uses less fuel, from 2.1 L/100 km against 9.0 L/100 km. At 4,689 mm, the BMW i8 Roadster is 170 mm longer than the Porsche 911 Carrera 4S Cabriolet.
| Specification |
BMW
i8 Roadster
2018 – 2020
|
Porsche
911 Carrera 4S Cabriolet
2018 – 2025
|
|---|---|---|
| Overview | ||
| Origin | Germany | Germany |
| Documented years | 2018 – 2020 | 2018 – 2025 |
| Body style | Roadster · Convertible | Convertible |
| Variants | 1 | 1 |
| Fuel | Hybrid | Petrol |
| Drive | AWD | AWD |
| Gearbox | Automatic | Automatic |
| Performance | ||
| Power | 231 hp | 450 hp |
| Torque | 320 Nm | 530 Nm |
| 0–100 km/h | 4.6 s | 3.7 s |
| Top speed | 249 km/h | 304 km/h |
| Economy | ||
| Fuel economy | 2.1 L/100 km | 9.0 L/100 km |
| Dimensions | ||
| Length | 4,689 mm | 4,519 mm |
| Width | 1,943 mm | 2,024 mm |
| Height | 1,290 mm | 1,298 mm |
| Wheelbase | 2,799 mm | 2,451 mm |
| Curb weight | 1,670 kg | — |
Ranges cover all variants of each car. The highlight marks the best version per row.
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