Spec Sizes

Porsche 911 vs Audi R8 Dimensions & Size Comparison

Comparing 2021 catalog dimensions. Porsche 911 · Audi R8

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

Side view
  • Length177.9 in – 178.6 in
  • Height51.1 in – 51.3 in
  • Wheelbase96.5 in
  • Curb weight3,354 lb – 3,790 lb
Front / width
  • Width72.9 in – 74.9 in
  • Audi R8 width76.4 in

Which is bigger?

  • Length: Audi R8 is 3.8 in shorter (178.3 in vs 174.4 in)
  • Width: Porsche 911 is 2.5 in narrower (73.9 in vs 76.4 in)
  • Height: Porsche 911 is 2.4 in taller (51.2 in vs 48.8 in)
  • Wheelbase: Audi R8 has a 7.8 in longer wheelbase (96.5 in vs 104.3 in)
  • Curb weight: Audi R8 is 182 lb heavier (3,572 lb vs 3,754 lb)

Biggest size differences

  1. Wheelbase: Audi R8 has a 7.8 in longer wheelbase (96.5 in vs 104.3 in)
  2. Height: Porsche 911 is 2.4 in taller (51.2 in vs 48.8 in)
  3. Curb weight: Audi R8 is 182 lb heavier (3,572 lb vs 3,754 lb)
  4. Width: Porsche 911 is 2.5 in narrower (73.9 in vs 76.4 in)
  5. Length: Audi R8 is 3.8 in shorter (178.3 in vs 174.4 in)

Practical verdicts

  • Easier to fit in a short garageAudi R8 — Audi R8 is shorter by 3.8 in Check garage fit for Porsche 911 · garage fit for Audi R8
  • Narrower for tight parkingPorsche 911 — Porsche 911 is narrower by 2.5 in
  • Smaller exterior footprintPorsche 911 — Based on length × width (Porsche 911)

Dimension comparison

SpecPorsche 911Audi R8Difference
Length178.3 in174.4 in3.8 in
Width73.9 in76.4 in2.5 in
Height51.2 in48.8 in2.4 in
Wheelbase96.5 in104.3 in7.8 in
Curb weight3,572 lb3,754 lb182 lb

Values use trim midpoints when a model year lists a range (e.g. length 177.9 in – 178.6 in).

Compare by year

Overlapping model years with dimension data.

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