Porsche 911 vs Cadillac XLR Dimensions & Size Comparison
Comparing 2020 vs 2009 catalog dimensions. Porsche 911 · Cadillac XLR
- Length177.9 in
- Height51.2 in
- Wheelbase96.5 in
- Ground clearance4.0 in
- Curb weight3,382 lb – 3,641 lb
- Width72.9 in
- Cadillac XLR width72.3 in
Which is bigger?
- Length: Cadillac XLR is 0.2 in shorter (177.9 in vs 177.7 in)
- Width: Cadillac XLR is 0.6 in narrower (72.9 in vs 72.3 in)
- Height: Porsche 911 is 0.8 in taller (51.2 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 136 lb heavier (3,512 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 136 lb heavier (3,512 lb vs 3,647 lb)
- Height: Porsche 911 is 0.8 in taller (51.2 in vs 50.4 in)
- Width: Cadillac XLR is 0.6 in narrower (72.9 in vs 72.3 in)
- Length: Cadillac XLR is 0.2 in shorter (177.9 in vs 177.7 in)
Practical verdicts
- Easier to fit in a short garageCadillac XLR — Cadillac XLR is shorter by 0.2 in Check garage fit for Porsche 911 · garage fit for Cadillac XLR
- Narrower for tight parkingCadillac XLR — Cadillac XLR is narrower by 0.6 in
Dimension comparison
| Spec | Porsche 911 | Cadillac XLR | Difference |
|---|---|---|---|
| Length | 177.9 in | 177.7 in | 0.2 in |
| Width | 72.9 in | 72.3 in | 0.6 in |
| Height | 51.2 in | 50.4 in | 0.8 in |
| Wheelbase | 96.5 in | 105.7 in | 9.2 in |
| Ground clearance | 4.0 in | — | — |
| Curb weight | 3,512 lb | 3,647 lb | 136 lb |
Values use trim midpoints when a model year lists a range.
Compare by year
Overlapping model years with dimension data.
Already own one of these cars?
Jump to maintenance sizes on the vehicle page — tires, wipers, battery, and oil when present in the catalog.