Porsche 911 Targa 4 (2016 – 2020) vs BMW i8 Roadster (2018 – 2020): specs compared

Both offer around 370 hp at most. The Porsche 911 Targa 4 has the higher top speed: 290 km/h against 249 km/h. The BMW i8 Roadster uses less fuel, from 2.1 L/100 km against 7.9 L/100 km. The Porsche 911 Targa 4 is the lighter car, from 1,570 kg against 1,670 kg. At 4,689 mm, the BMW i8 Roadster is 191 mm longer than the Porsche 911 Targa 4. The Porsche 911 Targa 4 dates from 2016 – 2020, the BMW i8 Roadster from 2018 – 2020.

Specification Porsche 911 Targa 4 Porsche 911 Targa 4 2016 – 2020 BMW i8 Roadster BMW i8 Roadster 2018 – 2020
Overview
Origin Germany Germany
Documented years 2016 – 2020 2018 – 2020
Body style Targa · Convertible Roadster · Convertible
Variants 2 1
Fuel Petrol Hybrid
Drive AWD AWD
Gearbox Automatic · Manual Automatic
Performance
Power 370 hp 231 hp
Torque 450 Nm 320 Nm
0–100 km/h 4.5 – 4.7 s 4.6 s
Top speed 286 – 290 km/h 249 km/h
Economy
Fuel economy 7.9 – 8.9 L/100 km 2.1 L/100 km
Dimensions
Length 4,498 mm 4,689 mm
Width 1,852 mm 1,943 mm
Height 1,288 mm 1,290 mm
Wheelbase 2,451 mm 2,799 mm
Curb weight 1,570 – 1,590 kg 1,670 kg

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

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