Spec Sizes

Porsche 911 vs Audi S3 Dimensions & Size Comparison

Comparing 2021 vs 2023 catalog dimensions. Porsche 911 · Audi S3

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 S3 width71.5 in

Which is bigger?

  • Length: Audi S3 is 0.9 in shorter (178.3 in vs 177.3 in)
  • Width: Audi S3 is 2.4 in narrower (73.9 in vs 71.5 in)
  • Height: Audi S3 is 4.6 in taller (51.2 in vs 55.8 in)
  • Wheelbase: Audi S3 has a 7.1 in longer wheelbase (96.5 in vs 103.6 in)
  • Curb weight: Porsche 911 is 45 lb heavier (3,572 lb vs 3,527 lb)

Biggest size differences

  1. Height: Audi S3 is 4.6 in taller (51.2 in vs 55.8 in)
  2. Wheelbase: Audi S3 has a 7.1 in longer wheelbase (96.5 in vs 103.6 in)
  3. Width: Audi S3 is 2.4 in narrower (73.9 in vs 71.5 in)
  4. Curb weight: Porsche 911 is 45 lb heavier (3,572 lb vs 3,527 lb)
  5. Length: Audi S3 is 0.9 in shorter (178.3 in vs 177.3 in)

Practical verdicts

  • Easier to fit in a short garageAudi S3 — Audi S3 is shorter by 0.9 in Check garage fit for Porsche 911 · garage fit for Audi S3
  • Narrower for tight parkingAudi S3 — Audi S3 is narrower by 2.4 in
  • Smaller exterior footprintAudi S3 — Based on length × width (Audi S3)

Dimension comparison

SpecPorsche 911Audi S3Difference
Length178.3 in177.3 in0.9 in
Width73.9 in71.5 in2.4 in
Height51.2 in55.8 in4.6 in
Wheelbase96.5 in103.6 in7.1 in
Curb weight3,572 lb3,527 lb45 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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