Porsche 911 vs BMW i8 Dimensions & Size Comparison
Comparing 2019 catalog dimensions. Porsche 911 · BMW i8
- Length177.1 in – 179.6 in
- Height49.3 in – 51.1 in
- Wheelbase96.5 in – 96.7 in
- Ground clearance4.0 in
- Curb weight3,142 lb – 3,682 lb
- Width71.2 in – 74.0 in
- BMW i8 width76.5 in
Which is bigger?
- Length: Porsche 911 is 6.6 in shorter (178.3 in vs 184.9 in)
- Width: Porsche 911 is 3.9 in narrower (72.6 in vs 76.5 in)
- Height: BMW i8 is 0.5 in taller (50.2 in vs 50.8 in)
- Wheelbase: BMW i8 has a 13.6 in longer wheelbase (96.6 in vs 110.2 in)
- Curb weight: BMW i8 is 174 lb heavier (3,412 lb vs 3,586 lb)
Biggest size differences
- Wheelbase: BMW i8 has a 13.6 in longer wheelbase (96.6 in vs 110.2 in)
- Width: Porsche 911 is 3.9 in narrower (72.6 in vs 76.5 in)
- Curb weight: BMW i8 is 174 lb heavier (3,412 lb vs 3,586 lb)
- Length: Porsche 911 is 6.6 in shorter (178.3 in vs 184.9 in)
- Height: BMW i8 is 0.5 in taller (50.2 in vs 50.8 in)
Practical verdicts
- Easier to fit in a short garagePorsche 911 — Porsche 911 is shorter by 6.6 in Check garage fit for Porsche 911 · garage fit for BMW i8
- Narrower for tight parkingPorsche 911 — Porsche 911 is narrower by 3.9 in
- Smaller exterior footprintPorsche 911 — Based on length × width (Porsche 911)
Dimension comparison
| Spec | Porsche 911 | BMW i8 | Difference |
|---|---|---|---|
| Length | 178.3 in | 184.9 in | 6.6 in |
| Width | 72.6 in | 76.5 in | 3.9 in |
| Height | 50.2 in | 50.8 in | 0.5 in |
| Wheelbase | 96.6 in | 110.2 in | 13.6 in |
| Ground clearance | 4.0 in | — | — |
| Curb weight | 3,412 lb | 3,586 lb | 174 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.
Already own one of these cars?
Jump to maintenance sizes on the vehicle page — tires, wipers, battery, and oil when present in the catalog.