Spec Sizes

BMW M3 vs Audi A4 Dimensions & Size Comparison

Comparing 1999 catalog dimensions. BMW M3 · Audi A4

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

Side view
  • Length174.5 in
  • Height52.6 in – 52.8 in
  • Wheelbase106.3 in – 106.7 in
  • Curb weight3,175 lb – 3,494 lb
Front / width
  • Width67.3 in
  • Audi A4 width68.2 in

Which is bigger?

  • Length: BMW M3 is 2.8 in shorter (174.5 in vs 177.3 in)
  • Width: BMW M3 is 0.9 in narrower (67.3 in vs 68.2 in)
  • Height: Audi A4 is 3.5 in taller (52.7 in vs 56.3 in)
  • Wheelbase: BMW M3 has a 3.7 in longer wheelbase (106.5 in vs 102.8 in)
  • Curb weight: BMW M3 is 94 lb heavier (3,335 lb vs 3,241 lb)

Biggest size differences

  1. Height: Audi A4 is 3.5 in taller (52.7 in vs 56.3 in)
  2. Wheelbase: BMW M3 has a 3.7 in longer wheelbase (106.5 in vs 102.8 in)
  3. Curb weight: BMW M3 is 94 lb heavier (3,335 lb vs 3,241 lb)
  4. Length: BMW M3 is 2.8 in shorter (174.5 in vs 177.3 in)
  5. Width: BMW M3 is 0.9 in narrower (67.3 in vs 68.2 in)

Practical verdicts

  • Easier to fit in a short garageBMW M3 — BMW M3 is shorter by 2.8 in Check garage fit for BMW M3 · garage fit for Audi A4
  • Narrower for tight parkingBMW M3 — BMW M3 is narrower by 0.9 in
  • Smaller exterior footprintBMW M3 — Based on length × width (BMW M3)

Dimension comparison

SpecBMW M3Audi A4Difference
Length174.5 in177.3 in2.8 in
Width67.3 in68.2 in0.9 in
Height52.7 in56.3 in3.5 in
Wheelbase106.5 in102.8 in3.7 in
Curb weight3,335 lb3,241 lb94 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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