Porsche 911 Carrera Cabriolet (2019 – 2024) vs BMW i8 Roadster (2018 – 2020): specs compared

The Porsche 911 Carrera Cabriolet is the more powerful of the two, with up to 385 hp against 374 hp. It is quicker, reaching 100 km/h in 4.0 s against 4.6 s. It has the higher top speed: 293 km/h against 249 km/h. The BMW i8 Roadster uses less fuel, from 2.1 L/100 km against 11.8 L/100 km. The Porsche 911 Carrera Cabriolet is the lighter car, from 1,567 kg against 1,670 kg. At 4,689 mm, the BMW i8 Roadster is 170 mm longer than the Porsche 911 Carrera Cabriolet.

Specification Porsche 911 Carrera Cabriolet Porsche 911 Carrera Cabriolet 2019 – 2024 BMW i8 Roadster BMW i8 Roadster 2018 – 2020
Overview
Origin Germany Germany
Documented years 2019 – 2024 2018 – 2020
Body style Convertible Roadster · Convertible
Variants 1 1
Fuel Petrol Hybrid
Drive RWD AWD
Gearbox Automatic Automatic
Performance
Power 385 hp 231 hp
Torque 450 Nm 320 Nm
0–100 km/h 4.0 s 4.6 s
Top speed 293 km/h 249 km/h
Economy
Fuel economy 11.8 L/100 km 2.1 L/100 km
Dimensions
Length 4,519 mm 4,689 mm
Width 2,024 mm 1,943 mm
Height 1,298 mm 1,290 mm
Wheelbase 2,451 mm 2,799 mm
Curb weight 1,567 kg 1,670 kg

Ranges cover all variants of each car. The highlight marks the best version per row.

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