Spec Sizes

BMW M4 vs BMW i8 Dimensions & Size Comparison

Comparing 2020 catalog dimensions. BMW M4 · BMW i8

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

Side view
  • Length184.5 in
  • Height54.4 in – 54.8 in
  • Wheelbase110.7 in
  • Curb weight3,620 lb – 4,110 lb
Front / width
  • Width73.6 in
  • BMW i8 width76.5 in

Which is bigger?

  • Length: BMW M4 is 0.4 in shorter (184.5 in vs 184.9 in)
  • Width: BMW M4 is 2.9 in narrower (73.6 in vs 76.5 in)
  • Height: BMW M4 is 3.8 in taller (54.6 in vs 50.8 in)
  • Wheelbase: BMW M4 has a 0.5 in longer wheelbase (110.7 in vs 110.2 in)
  • Curb weight: BMW M4 is 279 lb heavier (3,865 lb vs 3,586 lb)

Biggest size differences

  1. Curb weight: BMW M4 is 279 lb heavier (3,865 lb vs 3,586 lb)
  2. Height: BMW M4 is 3.8 in taller (54.6 in vs 50.8 in)
  3. Width: BMW M4 is 2.9 in narrower (73.6 in vs 76.5 in)
  4. Wheelbase: BMW M4 has a 0.5 in longer wheelbase (110.7 in vs 110.2 in)
  5. Length: BMW M4 is 0.4 in shorter (184.5 in vs 184.9 in)

Practical verdicts

  • Easier to fit in a short garageBMW M4 — BMW M4 is shorter by 0.4 in Check garage fit for BMW M4 · garage fit for BMW i8
  • Narrower for tight parkingBMW M4 — BMW M4 is narrower by 2.9 in
  • Smaller exterior footprintBMW M4 — Based on length × width (BMW M4)

Dimension comparison

SpecBMW M4BMW i8Difference
Length184.5 in184.9 in0.4 in
Width73.6 in76.5 in2.9 in
Height54.6 in50.8 in3.8 in
Wheelbase110.7 in110.2 in0.5 in
Curb weight3,865 lb3,586 lb279 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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