Spec Sizes

Porsche 911 vs BMW M4 Dimensions & Size Comparison

Comparing 2018 catalog dimensions. Porsche 911 · BMW M4

Same scale for both vehicles. Generic silhouette — proportional to measured length, height, width, wheelbase, and clearance.

Side view
  • Length177.1 in – 179.6 in
  • Height50.0 in – 51.0 in
  • Wheelbase96.5 in – 96.7 in
  • Ground clearance4.0 in
  • Curb weight3,153 lb – 3,682 lb
Front / width
  • Width71.2 in – 74.0 in
  • BMW M4 width73.6 in

Which is bigger?

  • Length: Porsche 911 is 6.2 in shorter (178.3 in vs 184.5 in)
  • Width: Porsche 911 is 1.0 in narrower (72.6 in vs 73.6 in)
  • Height: BMW M4 is 4.0 in taller (50.5 in vs 54.5 in)
  • Wheelbase: BMW M4 has a 14.1 in longer wheelbase (96.6 in vs 110.7 in)
  • Ground clearance: BMW M4 has 0.7 in more ground clearance (4.0 in vs 4.7 in)
  • Curb weight: BMW M4 is 375 lb heavier (3,418 lb vs 3,793 lb)

Biggest size differences

  1. Ground clearance: BMW M4 has 0.7 in more ground clearance (4.0 in vs 4.7 in)
  2. Wheelbase: BMW M4 has a 14.1 in longer wheelbase (96.6 in vs 110.7 in)
  3. Curb weight: BMW M4 is 375 lb heavier (3,418 lb vs 3,793 lb)
  4. Height: BMW M4 is 4.0 in taller (50.5 in vs 54.5 in)
  5. Length: Porsche 911 is 6.2 in shorter (178.3 in vs 184.5 in)

Practical verdicts

  • Easier to fit in a short garagePorsche 911 — Porsche 911 is shorter by 6.2 in Check garage fit for Porsche 911 · garage fit for BMW M4
  • Narrower for tight parkingPorsche 911 — Porsche 911 is narrower by 1.0 in
  • More ground clearanceBMW M4 — BMW M4 has 0.7 in more clearance
  • Smaller exterior footprintPorsche 911 — Based on length × width (Porsche 911)

Dimension comparison

SpecPorsche 911BMW M4Difference
Length178.3 in184.5 in6.2 in
Width72.6 in73.6 in1.0 in
Height50.5 in54.5 in4.0 in
Wheelbase96.6 in110.7 in14.1 in
Ground clearance4.0 in4.7 in0.7 in
Curb weight3,418 lb3,793 lb375 lb

Values use trim midpoints when a model year lists a range (e.g. length 177.1 in – 179.6 in).

Compare by year

Overlapping model years with dimension data.

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