Spec Sizes

BMW M3 vs Audi A6 Dimensions & Size Comparison

Comparing 2009 catalog dimensions. BMW M3 · Audi A6

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

Side view
  • Length180.4 in – 181.8 in
  • Height54.8 in – 57.0 in
  • Wheelbase108.7 in
  • Curb weight3,704 lb – 4,145 lb
Front / width
  • Width71.0 in – 71.5 in
  • Audi A6 width73.0 in

Which is bigger?

  • Length: BMW M3 is 12.7 in shorter (181.1 in vs 193.8 in)
  • Width: BMW M3 is 1.8 in narrower (71.3 in vs 73.0 in)
  • Height: Audi A6 is 1.9 in taller (55.9 in vs 57.8 in)
  • Wheelbase: Audi A6 has a 3.2 in longer wheelbase (108.7 in vs 111.9 in)
  • Curb weight: Audi A6 is 132 lb heavier (3,925 lb vs 4,057 lb)

Biggest size differences

  1. Length: BMW M3 is 12.7 in shorter (181.1 in vs 193.8 in)
  2. Height: Audi A6 is 1.9 in taller (55.9 in vs 57.8 in)
  3. Curb weight: Audi A6 is 132 lb heavier (3,925 lb vs 4,057 lb)
  4. Wheelbase: Audi A6 has a 3.2 in longer wheelbase (108.7 in vs 111.9 in)
  5. Width: BMW M3 is 1.8 in narrower (71.3 in vs 73.0 in)

Practical verdicts

  • Easier to fit in a short garageBMW M3 — BMW M3 is shorter by 12.7 in Check garage fit for BMW M3 · garage fit for Audi A6
  • Narrower for tight parkingBMW M3 — BMW M3 is narrower by 1.8 in
  • Smaller exterior footprintBMW M3 — Based on length × width (BMW M3)

Dimension comparison

SpecBMW M3Audi A6Difference
Length181.1 in193.8 in12.7 in
Width71.3 in73.0 in1.8 in
Height55.9 in57.8 in1.9 in
Wheelbase108.7 in111.9 in3.2 in
Curb weight3,925 lb4,057 lb132 lb

Values use trim midpoints when a model year lists a range (e.g. length 180.4 in – 181.8 in).

Compare by year

Overlapping model years with dimension data.

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