Spec Sizes

Audi A4 vs BMW M3 Dimensions & Size Comparison

Comparing 1999 catalog dimensions. Audi A4 · BMW M3

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

Side view
  • Length176.7 in – 178.0 in
  • Height55.8 in – 56.7 in
  • Wheelbase102.6 in – 103.0 in
  • Curb weight2,987 lb – 3,494 lb
Front / width
  • Width68.2 in
  • BMW M3 width67.3 in

Which is bigger?

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

Biggest size differences

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

Practical verdicts

  • Easier to fit in a short garageBMW M3 — BMW M3 is shorter by 2.8 in Check garage fit for Audi A4 · garage fit for BMW M3
  • 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

SpecAudi A4BMW M3Difference
Length177.3 in174.5 in2.8 in
Width68.2 in67.3 in0.9 in
Height56.3 in52.7 in3.5 in
Wheelbase102.8 in106.5 in3.7 in
Curb weight3,241 lb3,335 lb94 lb

Values use trim midpoints when a model year lists a range (e.g. length 176.7 in – 178.0 in).

Compare by year

Overlapping model years with dimension data.

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