BMW i8 vs Porsche 911 Dimensions & Size Comparison
Comparing 2017 vs 2022 catalog dimensions. BMW i8 · Porsche 911
- Length184.9 in
- Height50.8 in
- Wheelbase110.2 in
- Ground clearance4.6 in
- Curb weight3,455 lb
- Width76.5 in
- Porsche 911 width72.9 in – 74.9 in
Which is bigger?
- Length: Porsche 911 is 6.0 in shorter (184.9 in vs 178.9 in)
- Width: Porsche 911 is 2.6 in narrower (76.5 in vs 73.9 in)
- Height: essentially the same
- Wheelbase: BMW i8 has a 13.6 in longer wheelbase (110.2 in vs 96.6 in)
- Curb weight: Porsche 911 is 22 lb heavier (3,455 lb vs 3,477 lb)
Biggest size differences
- Wheelbase: BMW i8 has a 13.6 in longer wheelbase (110.2 in vs 96.6 in)
- Width: Porsche 911 is 2.6 in narrower (76.5 in vs 73.9 in)
- Length: Porsche 911 is 6.0 in shorter (184.9 in vs 178.9 in)
- Curb weight: Porsche 911 is 22 lb heavier (3,455 lb vs 3,477 lb)
Practical verdicts
- Easier to fit in a short garagePorsche 911 — Porsche 911 is shorter by 6.0 in Check garage fit for BMW i8 · garage fit for Porsche 911
- Narrower for tight parkingPorsche 911 — Porsche 911 is narrower by 2.6 in
- Smaller exterior footprintPorsche 911 — Based on length × width (Porsche 911)
Dimension comparison
| Spec | BMW i8 | Porsche 911 | Difference |
|---|---|---|---|
| Length | 184.9 in | 178.9 in | 6.0 in |
| Width | 76.5 in | 73.9 in | 2.6 in |
| Height | 50.8 in | 50.8 in | 0.0 in |
| Wheelbase | 110.2 in | 96.6 in | 13.6 in |
| Ground clearance | 4.6 in | — | — |
| Curb weight | 3,455 lb | 3,477 lb | 22 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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