Porsche 911 Turbo (1974 – 1977) vs Mercedes-Benz SL-Klasse (1971 – 1989): specs compared

The Mercedes-Benz SL-Klasse is the more powerful of the two, with up to 280 hp against 260 hp. The Porsche 911 Turbo is quicker, reaching 100 km/h in 5.5 s against 7.3 s. It has the higher top speed: 249 km/h against 225 km/h. It is the lighter car, from 1,195 kg against 1,500 kg. At 4,389 mm, the Mercedes-Benz SL-Klasse is 99 mm longer than the Porsche 911 Turbo. The Porsche 911 Turbo dates from 1974 – 1977, the Mercedes-Benz SL-Klasse from 1971 – 1989.

Specification Porsche 911 Turbo Porsche 911 Turbo 1974 – 1977 Mercedes-Benz SL-Klasse Mercedes-Benz SL-Klasse 1971 – 1989
Overview
Origin Germany Germany
Documented years 1974 – 1977 1971 – 1989
Body style — —
Variants 1 9
Fuel Petrol Petrol
Drive RWD RWD
Gearbox Manual Automatic · Manual
Performance
Power 260 hp 179 – 245 hp
Torque 345 Nm 240 – 405 Nm
0–100 km/h 5.5 s 7.3 – 10.1 s
Top speed 249 km/h 200 – 225 km/h
Economy
Fuel economy 10.8 L/100 km 10.9 – 13.1 L/100 km
Dimensions
Length 4,290 mm 4,389 mm
Width 1,775 mm 1,791 mm
Height 1,321 mm 1,300 mm
Wheelbase 2,268 mm 2,461 mm
Curb weight 1,195 kg 1,500 – 1,610 kg

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

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