Spec Sizes

Porsche 911 vs Audi TT Dimensions & Size Comparison

Comparing 2021 catalog dimensions. Porsche 911 · Audi TT

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 TT width72.1 in

Which is bigger?

  • Length: Audi TT is 13.3 in shorter (178.3 in vs 165.0 in)
  • Width: Audi TT is 1.8 in narrower (73.9 in vs 72.1 in)
  • Height: Audi TT is 2.1 in taller (51.2 in vs 53.3 in)
  • Wheelbase: Audi TT has a 2.1 in longer wheelbase (96.5 in vs 98.6 in)
  • Curb weight: Porsche 911 is 276 lb heavier (3,572 lb vs 3,296 lb)

Biggest size differences

  1. Curb weight: Porsche 911 is 276 lb heavier (3,572 lb vs 3,296 lb)
  2. Length: Audi TT is 13.3 in shorter (178.3 in vs 165.0 in)
  3. Height: Audi TT is 2.1 in taller (51.2 in vs 53.3 in)
  4. Width: Audi TT is 1.8 in narrower (73.9 in vs 72.1 in)
  5. Wheelbase: Audi TT has a 2.1 in longer wheelbase (96.5 in vs 98.6 in)

Practical verdicts

  • Easier to fit in a short garageAudi TT — Audi TT is shorter by 13.3 in Check garage fit for Porsche 911 · garage fit for Audi TT
  • Narrower for tight parkingAudi TT — Audi TT is narrower by 1.8 in
  • Smaller exterior footprintAudi TT — Based on length × width (Audi TT)

Dimension comparison

SpecPorsche 911Audi TTDifference
Length178.3 in165.0 in13.3 in
Width73.9 in72.1 in1.8 in
Height51.2 in53.3 in2.1 in
Wheelbase96.5 in98.6 in2.1 in
Curb weight3,572 lb3,296 lb276 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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