BMW Z4 Roadster (2006 – 2009) vs Porsche 911 Targa 4 (2006 – 2008): specs compared

The BMW Z4 Roadster is the more powerful of the two, with up to 343 hp against 325 hp. The Porsche 911 Targa 4 has the higher top speed: 280 km/h against 250 km/h. The BMW Z4 Roadster uses less fuel, from 7.5 L/100 km against 11.3 L/100 km. It is the lighter car, from 1,195 kg against 1,450 kg. At 4,427 mm, the Porsche 911 Targa 4 is 335 mm longer than the BMW Z4 Roadster.

Specification BMW Z4 Roadster BMW Z4 Roadster 2006 – 2009 Porsche 911 Targa 4 Porsche 911 Targa 4 2006 – 2008
Overview
Origin Germany Germany
Documented years 2006 – 2009 2006 – 2008
Body style Roadster · Convertible Targa · Convertible
Variants 6 2
Fuel Petrol Petrol
Drive RWD AWD
Gearbox Manual Automatic · Manual
Performance
Power 150 – 343 hp 325 hp
Torque 200 – 365 Nm 370 Nm
0–100 km/h 5.0 – 8.2 s 5.1 – 5.6 s
Top speed 220 – 250 km/h 275 – 280 km/h
Economy
Fuel economy 7.5 – 12.1 L/100 km 11.3 – 11.6 L/100 km
Dimensions
Length 4,092 mm 4,427 mm
Width 1,781 mm 1,852 mm
Height 1,298 – 1,303 mm 1,311 mm
Wheelbase 2,494 – 2,497 mm 2,350 mm
Curb weight 1,195 – 1,410 kg 1,450 – 1,490 kg

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

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