Porsche 911 vs Cadillac XLR Dimensions & Size Comparison
Comparing 2016 vs 2009 catalog dimensions. Porsche 911 · Cadillac XLR
- Length176.8 in – 177.5 in
- Height50.8 in – 51.3 in
- Wheelbase96.5 in
- Ground clearance4.8 in
- Curb weight3,042 lb – 3,693 lb
- Width71.2 in – 74.0 in
- Cadillac XLR width72.3 in
Which is bigger?
- Length: Porsche 911 is 0.5 in shorter (177.2 in vs 177.7 in)
- Width: Cadillac XLR is 0.3 in narrower (72.6 in vs 72.3 in)
- Height: Porsche 911 is 0.6 in taller (51.0 in vs 50.4 in)
- Wheelbase: Cadillac XLR has a 9.2 in longer wheelbase (96.5 in vs 105.7 in)
- Curb weight: Cadillac XLR is 280 lb heavier (3,368 lb vs 3,647 lb)
Biggest size differences
- Wheelbase: Cadillac XLR has a 9.2 in longer wheelbase (96.5 in vs 105.7 in)
- Curb weight: Cadillac XLR is 280 lb heavier (3,368 lb vs 3,647 lb)
- Height: Porsche 911 is 0.6 in taller (51.0 in vs 50.4 in)
- Width: Cadillac XLR is 0.3 in narrower (72.6 in vs 72.3 in)
- Length: Porsche 911 is 0.5 in shorter (177.2 in vs 177.7 in)
Practical verdicts
- Easier to fit in a short garagePorsche 911 — Porsche 911 is shorter by 0.5 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 | 177.2 in | 177.7 in | 0.5 in |
| Width | 72.6 in | 72.3 in | 0.3 in |
| Height | 51.0 in | 50.4 in | 0.6 in |
| Wheelbase | 96.5 in | 105.7 in | 9.2 in |
| Ground clearance | 4.8 in | — | — |
| Curb weight | 3,368 lb | 3,647 lb | 280 lb |
Values use trim midpoints when a model year lists a range (e.g. length 176.8 in – 177.5 in).
Compare by year
Overlapping model years with dimension data.
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