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Size comparison · drawn to scale

Mercedes-Benz C-Class W206 vs Audi A4 B9: size comparison

  • Length C-Class W206 25 mm1 in longer
  • Width A4 B9 22 mm0.9 in wider
  • Height C-Class W206 11 mm0.4 in taller
  • Boot A4 B9 5 L0.2 cu ft more

Car 1 blue, solid outline

C-Class W206 Mercedes-Benz · 2021–present · Sedan C-Class W206 4,751 × 1,820 × 1,438 mm15 ft 7 in × 6 ft 0 in × 4 ft 9 in Change

Car 2 coral, dashed outline

A4 B9 Audi · 2015–2024 · Sedan A4 B9 4,726 × 1,842 × 1,427 mm15 ft 6 in × 6 ft 1 in × 4 ft 8 in Change
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  • Car 1, blue, solid outline: C-Class W206
  • Car 2, coral, dashed outline: A4 B9
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 ft1 ft2 ft3 ft4 ftWheelbase 2,865 mmWheelbase 9 ft 5 inLength 4,751 mmLength 15 ft 7 in1,438 mm4 ft 9 inWheelbase 2,820 mmWheelbase 9 ft 3 inLength 4,726 mmLength 15 ft 6 in1,427 mm4 ft 8 in

Scale about 1:21 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 C-Class W206 is 25 mm1 in longer, 22 mm0.9 in narrower and 11 mm0.4 in taller than the A4 B9. Its wheelbase is 45 mm2 in longer.

DimensionC-Class W206A4 B9Difference, car 1 vs car 2
Length4,751 mm15 ft 7 in15 ft 7 in4,751 mm4,726 mm15 ft 6 in15 ft 6 in4,726 mm +25 mm+1 in +0.5%
Width1,820 mm6 ft 0 in6 ft 0 in1,820 mm1,842 mm6 ft 1 in6 ft 1 in1,842 mm −22 mm−0.9 in −1.2%
Height1,438 mm4 ft 9 in4 ft 9 in1,438 mm1,427 mm4 ft 8 in4 ft 8 in1,427 mm +11 mm+0.4 in +0.8%
Wheelbase2,865 mm9 ft 5 in9 ft 5 in2,865 mm2,820 mm9 ft 3 in9 ft 3 in2,820 mm +45 mm+2 in +1.6%
Footprint8.65 m²93.1 sq ft93.1 sq ft8.65 m²8.71 m²93.7 sq ft93.7 sq ft8.71 m² −0.06 m²−0.6 sq ft −0.7%
Boot455 L16.1 cu ft16.1 cu ft455 L460 L16.2 cu ft16.2 cu ft460 L −5 L−0.2 cu ft −1.1%
Kerb weight1,650–1,824 kg3,638–4,021 lb3,638–4,021 lb1,650–1,824 kg1,485–1,685 kg3,274–3,715 lb3,274–3,715 lb1,485–1,685 kg +165 kg+364 lb +11.1%

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.

C-Class W206

Single garage
Tight 749 mm2 ft 5 in to spare in length, 590 mm1 ft 11 in each side
Parking bay
Tight 249 mm10 in to spare in length, 340 mm1 ft 1 in each side

A4 B9

Single garage
Tight 774 mm2 ft 6 in to spare in length, 579 mm1 ft 11 in each side
Parking bay
Tight 274 mm11 in to spare in length, 329 mm1 ft 1 in each side

Check your own garage with these cars

Frequently asked questions

Which is bigger, the Mercedes-Benz C-Class W206 or the Audi A4 B9?

The Audi A4 B9 is the bigger car by footprint (length × width). The C-Class W206 is 25 mm longer, 22 mm narrower and 11 mm taller than the A4 B9. Its wheelbase is 45 mm longer.

Will the Mercedes-Benz C-Class W206 and the Audi A4 B9 fit in a standard garage?

In a typical single garage of 5.5 × 3.0 m inside: The Mercedes-Benz C-Class W206 fits, but it is tight to get out (749 mm to spare in length, 590 mm each side). The Audi A4 B9 fits, but it is tight to get out (774 mm to spare in length, 579 mm each side). Widths are without mirrors; check your own garage with our garage checker.

Which has the bigger boot?

The Audi A4 B9: 460 L against 455 L in the Mercedes-Benz C-Class W206 (seats up, as quoted by the maker).