Porsche 911 vs Cadillac XLR Dimensions & Size Comparison
Comparing 2018 vs 2009 catalog dimensions. Porsche 911 · Cadillac XLR
- Length177.1 in – 179.6 in
- Height50.0 in – 51.0 in
- Wheelbase96.5 in – 96.7 in
- Ground clearance4.0 in
- Curb weight3,153 lb – 3,682 lb
- Width71.2 in – 74.0 in
- Cadillac XLR width72.3 in
Which is bigger?
- Length: Cadillac XLR is 0.7 in shorter (178.3 in vs 177.7 in)
- Width: Cadillac XLR is 0.3 in narrower (72.6 in vs 72.3 in)
- Height: Porsche 911 is 0.1 in taller (50.5 in vs 50.4 in)
- Wheelbase: Cadillac XLR has a 9.1 in longer wheelbase (96.6 in vs 105.7 in)
- Curb weight: Cadillac XLR is 230 lb heavier (3,418 lb vs 3,647 lb)
Biggest size differences
- Wheelbase: Cadillac XLR has a 9.1 in longer wheelbase (96.6 in vs 105.7 in)
- Curb weight: Cadillac XLR is 230 lb heavier (3,418 lb vs 3,647 lb)
- Width: Cadillac XLR is 0.3 in narrower (72.6 in vs 72.3 in)
- Length: Cadillac XLR is 0.7 in shorter (178.3 in vs 177.7 in)
- Height: Porsche 911 is 0.1 in taller (50.5 in vs 50.4 in)
Practical verdicts
- Easier to fit in a short garageCadillac XLR — Cadillac XLR is shorter by 0.7 in Check garage fit for Porsche 911 · garage fit for Cadillac XLR
- Narrower for tight parkingCadillac XLR — Cadillac XLR is narrower by 0.3 in
Dimension comparison
| Spec | Porsche 911 | Cadillac XLR | Difference |
|---|---|---|---|
| Length | 178.3 in | 177.7 in | 0.7 in |
| Width | 72.6 in | 72.3 in | 0.3 in |
| Height | 50.5 in | 50.4 in | 0.1 in |
| Wheelbase | 96.6 in | 105.7 in | 9.1 in |
| Ground clearance | 4.0 in | — | — |
| Curb weight | 3,418 lb | 3,647 lb | 230 lb |
Values use trim midpoints when a model year lists a range (e.g. length 177.1 in – 179.6 in).
Compare by year
Overlapping model years with dimension data.
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