Spec Sizes

Porsche 911 vs BMW i8 Dimensions & Size Comparison

Comparing 2017 catalog dimensions. Porsche 911 · BMW i8

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

Side view
  • Length177.1 in – 177.4 in
  • Height50.7 in – 51.0 in
  • Wheelbase96.5 in
  • Ground clearance4.0 in
  • Curb weight3,153 lb – 3,682 lb
Front / width
  • Width71.2 in – 74.0 in
  • BMW i8 width76.5 in

Which is bigger?

  • Length: Porsche 911 is 7.7 in shorter (177.3 in vs 184.9 in)
  • Width: Porsche 911 is 3.9 in narrower (72.6 in vs 76.5 in)
  • Height: Porsche 911 is 0.1 in taller (50.9 in vs 50.8 in)
  • Wheelbase: BMW i8 has a 13.7 in longer wheelbase (96.5 in vs 110.2 in)
  • Ground clearance: BMW i8 has 0.6 in more ground clearance (4.0 in vs 4.6 in)
  • Curb weight: BMW i8 is 38 lb heavier (3,418 lb vs 3,455 lb)

Biggest size differences

  1. Ground clearance: BMW i8 has 0.6 in more ground clearance (4.0 in vs 4.6 in)
  2. Wheelbase: BMW i8 has a 13.7 in longer wheelbase (96.5 in vs 110.2 in)
  3. Width: Porsche 911 is 3.9 in narrower (72.6 in vs 76.5 in)
  4. Length: Porsche 911 is 7.7 in shorter (177.3 in vs 184.9 in)
  5. Curb weight: BMW i8 is 38 lb heavier (3,418 lb vs 3,455 lb)

Practical verdicts

  • Easier to fit in a short garagePorsche 911 — Porsche 911 is shorter by 7.7 in Check garage fit for Porsche 911 · garage fit for BMW i8
  • Narrower for tight parkingPorsche 911 — Porsche 911 is narrower by 3.9 in
  • More ground clearanceBMW i8 — BMW i8 has 0.6 in more clearance
  • Smaller exterior footprintPorsche 911 — Based on length × width (Porsche 911)

Dimension comparison

SpecPorsche 911BMW i8Difference
Length177.3 in184.9 in7.7 in
Width72.6 in76.5 in3.9 in
Height50.9 in50.8 in0.1 in
Wheelbase96.5 in110.2 in13.7 in
Ground clearance4.0 in4.6 in0.6 in
Curb weight3,418 lb3,455 lb38 lb

Values use trim midpoints when a model year lists a range (e.g. length 177.1 in – 177.4 in).

Compare by year

Overlapping model years with dimension data.

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