Spec Sizes

Porsche 911 vs Dodge Viper Dimensions & Size Comparison

Comparing 2021 vs 2017 catalog dimensions. Porsche 911 · Dodge Viper

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
  • Dodge Viper width76.4 in

Which is bigger?

  • Length: Dodge Viper is 2.6 in shorter (178.3 in vs 175.7 in)
  • Width: Porsche 911 is 2.5 in narrower (73.9 in vs 76.4 in)
  • Height: Porsche 911 is 2.1 in taller (51.2 in vs 49.1 in)
  • Wheelbase: Dodge Viper has a 2.3 in longer wheelbase (96.5 in vs 98.8 in)
  • Curb weight: Porsche 911 is 178 lb heavier (3,572 lb vs 3,395 lb)

Biggest size differences

  1. Curb weight: Porsche 911 is 178 lb heavier (3,572 lb vs 3,395 lb)
  2. Height: Porsche 911 is 2.1 in taller (51.2 in vs 49.1 in)
  3. Width: Porsche 911 is 2.5 in narrower (73.9 in vs 76.4 in)
  4. Wheelbase: Dodge Viper has a 2.3 in longer wheelbase (96.5 in vs 98.8 in)
  5. Length: Dodge Viper is 2.6 in shorter (178.3 in vs 175.7 in)

Practical verdicts

  • Easier to fit in a short garageDodge Viper — Dodge Viper is shorter by 2.6 in Check garage fit for Porsche 911 · garage fit for Dodge Viper
  • 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 911Dodge ViperDifference
Length178.3 in175.7 in2.6 in
Width73.9 in76.4 in2.5 in
Height51.2 in49.1 in2.1 in
Wheelbase96.5 in98.8 in2.3 in
Ground clearance—5.0 in—
Curb weight3,572 lb3,395 lb178 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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