Cadillac XLR (2005 – 2007) vs Porsche 911 GT3 (2006 – 2009): specs compared

The Cadillac XLR is the more powerful of the two, with up to 449 hp against 415 hp. The Porsche 911 GT3 is quicker, reaching 100 km/h in 4.3 s against 5.0 s. It has the higher top speed: 311 km/h against 250 km/h. It is the lighter car, from 1,395 kg against 1,730 kg. At 4,514 mm, the Cadillac XLR is 87 mm longer than the Porsche 911 GT3.

Specification Cadillac XLR Cadillac XLR 2005 – 2007 Porsche 911 GT3 Porsche 911 GT3 2006 – 2009
Overview
Origin United States Germany
Documented years 2005 – 2007 2006 – 2009
Body style — —
Variants 1 1
Fuel Petrol Petrol
Drive RWD RWD
Gearbox Automatic Manual
Performance
Power 449 hp 415 hp
Torque 561 Nm 405 Nm
0–100 km/h 5.0 s 4.3 s
Top speed 250 km/h 311 km/h
Economy
Fuel economy — 12.8 L/100 km
Dimensions
Length 4,514 mm 4,427 mm
Width 1,836 mm 1,808 mm
Height 1,280 mm 1,280 mm
Wheelbase 2,685 mm 2,355 mm
Curb weight 1,730 kg 1,395 kg

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

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