Spec Sizes

BMW M4 vs Honda Civic Si Dimensions & Size Comparison

Comparing 2018 vs 2022 catalog dimensions. BMW M4 · Honda Civic Si

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

Side view
  • Length184.5 in
  • Height54.4 in – 54.6 in
  • Wheelbase110.7 in
  • Ground clearance4.7 in
  • Curb weight3,530 lb – 4,055 lb
Front / width
  • Width73.6 in
  • Honda Civic Si width70.9 in

Which is bigger?

  • Length: Honda Civic Si is 0.5 in shorter (184.5 in vs 184.0 in)
  • Width: Honda Civic Si is 2.7 in narrower (73.6 in vs 70.9 in)
  • Height: Honda Civic Si is 1.0 in taller (54.5 in vs 55.5 in)
  • Wheelbase: BMW M4 has a 3.0 in longer wheelbase (110.7 in vs 107.7 in)
  • Curb weight: BMW M4 is 836 lb heavier (3,793 lb vs 2,957 lb)

Biggest size differences

  1. Curb weight: BMW M4 is 836 lb heavier (3,793 lb vs 2,957 lb)
  2. Width: Honda Civic Si is 2.7 in narrower (73.6 in vs 70.9 in)
  3. Wheelbase: BMW M4 has a 3.0 in longer wheelbase (110.7 in vs 107.7 in)
  4. Height: Honda Civic Si is 1.0 in taller (54.5 in vs 55.5 in)
  5. Length: Honda Civic Si is 0.5 in shorter (184.5 in vs 184.0 in)

Practical verdicts

  • Easier to fit in a short garageHonda Civic Si — Honda Civic Si is shorter by 0.5 in Check garage fit for BMW M4 · garage fit for Honda Civic Si
  • Narrower for tight parkingHonda Civic Si — Honda Civic Si is narrower by 2.7 in
  • Smaller exterior footprintHonda Civic Si — Based on length × width (Honda Civic Si)

Dimension comparison

SpecBMW M4Honda Civic SiDifference
Length184.5 in184.0 in0.5 in
Width73.6 in70.9 in2.7 in
Height54.5 in55.5 in1.0 in
Wheelbase110.7 in107.7 in3.0 in
Ground clearance4.7 in——
Curb weight3,793 lb2,957 lb836 lb

Values use trim midpoints when a model year lists a range.

Compare by year

Overlapping model years with dimension data.

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