Porsche 911 vs Cadillac XLR Dimensions & Size Comparison
Comparing 2008 catalog dimensions. Porsche 911 · Cadillac XLR
- Length175.6 in – 176.9 in
- Height50.4 in – 51.6 in
- Wheelbase92.5 in – 92.9 in
- Ground clearance3.8 in – 4.3 in
- Curb weight3,031 lb – 3,494 lb
- Width71.2 in – 72.9 in
- Cadillac XLR width72.3 in
Which is bigger?
- Length: Porsche 911 is 1.4 in shorter (176.3 in vs 177.7 in)
- Width: Porsche 911 is 0.2 in narrower (72.1 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 13.0 in longer wheelbase (92.7 in vs 105.7 in)
- Curb weight: Cadillac XLR is 385 lb heavier (3,263 lb vs 3,647 lb)
Biggest size differences
- Wheelbase: Cadillac XLR has a 13.0 in longer wheelbase (92.7 in vs 105.7 in)
- Curb weight: Cadillac XLR is 385 lb heavier (3,263 lb vs 3,647 lb)
- Height: Porsche 911 is 0.6 in taller (51.0 in vs 50.4 in)
- Length: Porsche 911 is 1.4 in shorter (176.3 in vs 177.7 in)
- Width: Porsche 911 is 0.2 in narrower (72.1 in vs 72.3 in)
Practical verdicts
- Easier to fit in a short garagePorsche 911 — Porsche 911 is shorter by 1.4 in Check garage fit for Porsche 911 · garage fit for Cadillac XLR
- Narrower for tight parkingPorsche 911 — Porsche 911 is narrower by 0.2 in
- Smaller exterior footprintPorsche 911 — Based on length × width (Porsche 911)
Dimension comparison
| Spec | Porsche 911 | Cadillac XLR | Difference |
|---|---|---|---|
| Length | 176.3 in | 177.7 in | 1.4 in |
| Width | 72.1 in | 72.3 in | 0.2 in |
| Height | 51.0 in | 50.4 in | 0.6 in |
| Wheelbase | 92.7 in | 105.7 in | 13.0 in |
| Ground clearance | 4.0 in | — | — |
| Curb weight | 3,263 lb | 3,647 lb | 385 lb |
Values use trim midpoints when a model year lists a range (e.g. length 175.6 in – 176.9 in).
Compare by year
Overlapping model years with dimension data.
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