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Size comparison · drawn to scale

Porsche 911 992 vs Mercedes-Benz SL-Class R129: size comparison

  • Length 911 992 20 mm0.8 in longer
  • Width 911 992 43 mm2 in wider
  • Height SL-Class R129 11 mm0.4 in taller

Car 1 blue, solid outline

911 992 Porsche · 2019–present · Coupé 911 992 4,519 × 1,852 × 1,289 mm14 ft 10 in × 6 ft 1 in × 4 ft 3 in Change

Car 2 coral, dashed outline

SL-Class R129 Mercedes-Benz · 1989–2001 · Coupé SL-Class R129 4,499 × 1,809 × 1,300 mm14 ft 9 in × 5 ft 11 in × 4 ft 3 in Change
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  • Car 1, blue, solid outline: 911 992
  • Car 2, coral, dashed outline: SL-Class R129
0 m1 m2 m3 m4 m5 m6 m1 m0 ft1 ft2 ft3 ft4 ft5 ft6 ft7 ft8 ft9 ft10 ft11 ft12 ft13 ft14 ft15 ft16 ft17 ft18 ft19 ft1 ft2 ft3 ft4 ftWheelbase 2,450 mmWheelbase 8 ft 0 inLength 4,519 mmLength 14 ft 10 in1,289 mm4 ft 3 inWheelbase 2,515 mmWheelbase 8 ft 3 inLength 4,499 mmLength 14 ft 9 in1,300 mm4 ft 3 in

Scale about 1:20 on a desktop screen · grid 500 mm1 ft · in Overlay both cars start at the front bumper Side view: dashed lines mark the axles

Dimensions and difference

The 911 992 is 20 mm0.8 in longer, 43 mm2 in wider and 11 mm0.4 in lower than the SL-Class R129. Its wheelbase is 65 mm3 in shorter.

Dimension911 992SL-Class R129Difference, car 1 vs car 2
Length4,519 mm14 ft 10 in14 ft 10 in4,519 mm4,499 mm14 ft 9 in14 ft 9 in4,499 mm +20 mm+0.8 in +0.4%
Width1,852 mm6 ft 1 in6 ft 1 in1,852 mm1,809 mm5 ft 11 in5 ft 11 in1,809 mm +43 mm+2 in +2.4%
Height1,289 mm4 ft 3 in4 ft 3 in1,289 mm1,300 mm4 ft 3 in4 ft 3 in1,300 mm −11 mm−0.4 in −0.8%
Wheelbase2,450 mm8 ft 0 in8 ft 0 in2,450 mm2,515 mm8 ft 3 in8 ft 3 in2,515 mm −65 mm−3 in −2.6%
Footprint8.37 m²90.1 sq ft90.1 sq ft8.37 m²8.14 m²87.6 sq ft87.6 sq ft8.14 m² +0.23 m²+2.5 sq ft +2.8%
BootNot in our catalog yet265 L9.4 cu ft9.4 cu ft265 L -
Kerb weight1,450–1,715 kg3,197–3,781 lb3,197–3,781 lb1,450–1,715 kg1,810 kg3,990 lb3,990 lb1,810 kg −360 kg−794 lb −19.9%

Width without mirrors. Figures come from the catalog version pages; the drawing uses the same numbers. Body outlines are generic for the body type - proportions are exact, styling is not. Weight difference compares the lightest versions.

Garage and parking

A typical single garage is about 5.5 × 3.0 m18 ft 1 in × 9 ft 10 in inside; a parking bay about 5.0 × 2.5 m16 ft 5 in × 8 ft 2 in. Room to open a door: about 600 mm2 ft each side.

911 992

Single garage
Tight 981 mm3 ft 3 in to spare in length, 574 mm1 ft 11 in each side
Parking bay
Tight 481 mm1 ft 7 in to spare in length, 324 mm1 ft 1 in each side

SL-Class R129

Single garage
Tight 1,001 mm3 ft 3 in to spare in length, 596 mm1 ft 11 in each side
Parking bay
Tight 501 mm1 ft 8 in to spare in length, 346 mm1 ft 2 in each side

Check your own garage with these cars

Frequently asked questions

Which is bigger, the Porsche 911 992 or the Mercedes-Benz SL-Class R129?

The Porsche 911 992 is the bigger car by footprint (length × width). The 911 992 is 20 mm longer, 43 mm wider and 11 mm lower than the SL-Class R129. Its wheelbase is 65 mm shorter.

Will the Porsche 911 992 and the Mercedes-Benz SL-Class R129 fit in a standard garage?

In a typical single garage of 5.5 × 3.0 m inside: The Porsche 911 992 fits, but it is tight to get out (981 mm to spare in length, 574 mm each side). The Mercedes-Benz SL-Class R129 fits, but it is tight to get out (1,001 mm to spare in length, 596 mm each side). Widths are without mirrors; check your own garage with our garage checker.

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