Spec Sizes

Cadillac XLR vs Porsche 911 Dimensions & Size Comparison

Comparing 2009 vs 2022 catalog dimensions. Cadillac XLR · Porsche 911

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

Side view
  • Length177.7 in
  • Height50.4 in
  • Wheelbase105.7 in
  • Curb weight3,647 lb
Front / width
  • Width72.3 in
  • Porsche 911 width72.9 in – 74.9 in

Which is bigger?

  • Length: Cadillac XLR is 1.3 in shorter (177.7 in vs 178.9 in)
  • Width: Cadillac XLR is 1.6 in narrower (72.3 in vs 73.9 in)
  • Height: Porsche 911 is 0.4 in taller (50.4 in vs 50.8 in)
  • Wheelbase: Cadillac XLR has a 9.1 in longer wheelbase (105.7 in vs 96.6 in)
  • Curb weight: Cadillac XLR is 170 lb heavier (3,647 lb vs 3,477 lb)

Biggest size differences

  1. Wheelbase: Cadillac XLR has a 9.1 in longer wheelbase (105.7 in vs 96.6 in)
  2. Curb weight: Cadillac XLR is 170 lb heavier (3,647 lb vs 3,477 lb)
  3. Width: Cadillac XLR is 1.6 in narrower (72.3 in vs 73.9 in)
  4. Height: Porsche 911 is 0.4 in taller (50.4 in vs 50.8 in)
  5. Length: Cadillac XLR is 1.3 in shorter (177.7 in vs 178.9 in)

Practical verdicts

  • Easier to fit in a short garageCadillac XLR — Cadillac XLR is shorter by 1.3 in Check garage fit for Cadillac XLR · garage fit for Porsche 911
  • Narrower for tight parkingCadillac XLR — Cadillac XLR is narrower by 1.6 in
  • Smaller exterior footprintCadillac XLR — Based on length × width (Cadillac XLR)

Dimension comparison

SpecCadillac XLRPorsche 911Difference
Length177.7 in178.9 in1.3 in
Width72.3 in73.9 in1.6 in
Height50.4 in50.8 in0.4 in
Wheelbase105.7 in96.6 in9.1 in
Curb weight3,647 lb3,477 lb170 lb

Values use trim midpoints when a model year lists a range.

Compare by year

Overlapping model years with dimension data.

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