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Size comparison · drawn to scale

Citroen SM I vs Mercedes-Benz CLS (C218): size comparison

  • Length CLS (C218) 47 mm2 in longer
  • Height CLS (C218) 92 mm4 in taller

Car 1 blue, solid outline

SM I Citroen · 1970–1975 · Coupé SM I 4,893 × 1,836 × 1,324 mm16 ft 1 in × 6 ft 0 in × 4 ft 4 in Change

Car 2 coral, dashed outline

CLS (C218) Mercedes-Benz · 2011–2018 · Coupé CLS (C218) 4,940 × 1,416 mm16 ft 2 in × 4 ft 8 in Change
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  • Car 1, blue, solid outline: SM I
  • Car 2, coral, dashed outline: CLS (C218)
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 ft20 ft21 ft1 ft2 ft3 ft4 ftWheelbase 2,900 mmWheelbase 9 ft 6 inLength 4,893 mmLength 16 ft 1 in1,324 mm4 ft 4 inWheelbase 2,874 mmWheelbase 9 ft 5 inLength 4,940 mmLength 16 ft 2 in1,416 mm4 ft 8 in

Scale about 1:22 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 SM I is 47 mm2 in shorter and 92 mm4 in lower than the CLS (C218). Its wheelbase is 26 mm1 in longer.

DimensionSM ICLS (C218)Difference, car 1 vs car 2
Length4,893 mm16 ft 1 in16 ft 1 in4,893 mm4,940 mm16 ft 2 in16 ft 2 in4,940 mm −47 mm−2 in −1.0%
Width1,836 mm6 ft 0 in6 ft 0 in1,836 mmNot in our catalog yet -
Height1,324 mm4 ft 4 in4 ft 4 in1,324 mm1,416 mm4 ft 8 in4 ft 8 in1,416 mm −92 mm−4 in −6.5%
Wheelbase2,900 mm9 ft 6 in9 ft 6 in2,900 mm2,874 mm9 ft 5 in9 ft 5 in2,874 mm +26 mm+1 in +0.9%
BootNot in our catalog yet475 L16.8 cu ft16.8 cu ft475 L -

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.

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.

SM I

Single garage
Tight 607 mm2 ft 0 in to spare in length, 582 mm1 ft 11 in each side
Parking bay
Tight 107 mm4 in to spare in length, 332 mm1 ft 1 in each side

Check your own garage with these cars

Frequently asked questions

Which is bigger, the Citroen SM I or the Mercedes-Benz CLS (C218)?

The Mercedes-Benz CLS (C218) is the bigger car by length. The SM I is 47 mm shorter and 92 mm lower than the CLS (C218). Its wheelbase is 26 mm longer.

Will the Citroen SM I and the Mercedes-Benz CLS (C218) fit in a standard garage?

In a typical single garage of 5.5 × 3.0 m inside: The Citroen SM I fits, but it is tight to get out (607 mm to spare in length, 582 mm each side). Widths are without mirrors; check your own garage with our garage checker.