Spec Sizes

BMW M3 vs Audi S6 Dimensions & Size Comparison

Comparing 2013 catalog dimensions. BMW M3 · Audi S6

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

Side view
  • Length181.8 in
  • Height54.8 in – 55.8 in
  • Wheelbase108.7 in
  • Curb weight3,704 lb – 4,145 lb
Front / width
  • Width71.0 in
  • Audi S6 width73.8 in

Which is bigger?

  • Length: BMW M3 is 12.1 in shorter (181.8 in vs 193.9 in)
  • Width: BMW M3 is 2.8 in narrower (71.0 in vs 73.8 in)
  • Height: Audi S6 is 2.5 in taller (55.3 in vs 57.8 in)
  • Wheelbase: Audi S6 has a 6.0 in longer wheelbase (108.7 in vs 114.7 in)
  • Curb weight: Audi S6 is 474 lb heavier (3,925 lb vs 4,398 lb)

Biggest size differences

  1. Curb weight: Audi S6 is 474 lb heavier (3,925 lb vs 4,398 lb)
  2. Length: BMW M3 is 12.1 in shorter (181.8 in vs 193.9 in)
  3. Wheelbase: Audi S6 has a 6.0 in longer wheelbase (108.7 in vs 114.7 in)
  4. Height: Audi S6 is 2.5 in taller (55.3 in vs 57.8 in)
  5. Width: BMW M3 is 2.8 in narrower (71.0 in vs 73.8 in)

Practical verdicts

  • Easier to fit in a short garageBMW M3 — BMW M3 is shorter by 12.1 in Check garage fit for BMW M3 · garage fit for Audi S6
  • Narrower for tight parkingBMW M3 — BMW M3 is narrower by 2.8 in
  • Smaller exterior footprintBMW M3 — Based on length × width (BMW M3)

Dimension comparison

SpecBMW M3Audi S6Difference
Length181.8 in193.9 in12.1 in
Width71.0 in73.8 in2.8 in
Height55.3 in57.8 in2.5 in
Wheelbase108.7 in114.7 in6.0 in
Curb weight3,925 lb4,398 lb474 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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