Spec Sizes

BMW M3 vs Audi S4 Dimensions & Size Comparison

Comparing 2004 catalog dimensions. BMW M3 · Audi S4

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

Side view
  • Length176.8 in
  • Height53.7 in – 54.0 in
  • Wheelbase107.5 in
  • Curb weight3,415 lb – 3,781 lb
Front / width
  • Width70.1 in
  • Audi S4 width69.5 in – 70.0 in

Which is bigger?

  • Length: BMW M3 is 2.7 in shorter (176.8 in vs 179.5 in)
  • Width: Audi S4 is 0.3 in narrower (70.1 in vs 69.8 in)
  • Height: Audi S4 is 2.1 in taller (53.9 in vs 56.0 in)
  • Wheelbase: BMW M3 has a 3.1 in longer wheelbase (107.5 in vs 104.4 in)
  • Curb weight: Audi S4 is 360 lb heavier (3,598 lb vs 3,958 lb)

Biggest size differences

  1. Curb weight: Audi S4 is 360 lb heavier (3,598 lb vs 3,958 lb)
  2. Height: Audi S4 is 2.1 in taller (53.9 in vs 56.0 in)
  3. Wheelbase: BMW M3 has a 3.1 in longer wheelbase (107.5 in vs 104.4 in)
  4. Length: BMW M3 is 2.7 in shorter (176.8 in vs 179.5 in)
  5. Width: Audi S4 is 0.3 in narrower (70.1 in vs 69.8 in)

Practical verdicts

  • Easier to fit in a short garageBMW M3 — BMW M3 is shorter by 2.7 in Check garage fit for BMW M3 · garage fit for Audi S4
  • Narrower for tight parkingAudi S4 — Audi S4 is narrower by 0.3 in
  • Smaller exterior footprintBMW M3 — Based on length × width (BMW M3)

Dimension comparison

SpecBMW M3Audi S4Difference
Length176.8 in179.5 in2.7 in
Width70.1 in69.8 in0.3 in
Height53.9 in56.0 in2.1 in
Wheelbase107.5 in104.4 in3.1 in
Curb weight3,598 lb3,958 lb360 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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