Porsche 911 vs BMW M4 Dimensions & Size Comparison
Comparing 2022 vs 2023 catalog dimensions. Porsche 911 · BMW M4
- Length177.9 in – 180.0 in
- Height50.4 in – 51.3 in
- Wheelbase96.5 in – 96.7 in
- Curb weight3,164 lb – 3,790 lb
- Width72.9 in – 74.9 in
- BMW M4 width74.3 in – 75.6 in
Which is bigger?
- Length: Porsche 911 is 9.9 in shorter (178.9 in vs 188.9 in)
- Width: Porsche 911 is 1.0 in narrower (73.9 in vs 74.9 in)
- Height: BMW M4 is 3.9 in taller (50.8 in vs 54.8 in)
- Wheelbase: BMW M4 has a 15.9 in longer wheelbase (96.6 in vs 112.5 in)
- Curb weight: BMW M4 is 496 lb heavier (3,477 lb vs 3,973 lb)
Biggest size differences
- Wheelbase: BMW M4 has a 15.9 in longer wheelbase (96.6 in vs 112.5 in)
- Curb weight: BMW M4 is 496 lb heavier (3,477 lb vs 3,973 lb)
- Height: BMW M4 is 3.9 in taller (50.8 in vs 54.8 in)
- Length: Porsche 911 is 9.9 in shorter (178.9 in vs 188.9 in)
- Width: Porsche 911 is 1.0 in narrower (73.9 in vs 74.9 in)
Practical verdicts
- Easier to fit in a short garagePorsche 911 — Porsche 911 is shorter by 9.9 in Check garage fit for Porsche 911 · garage fit for BMW M4
- Narrower for tight parkingPorsche 911 — Porsche 911 is narrower by 1.0 in
- Smaller exterior footprintPorsche 911 — Based on length × width (Porsche 911)
Dimension comparison
| Spec | Porsche 911 | BMW M4 | Difference |
|---|---|---|---|
| Length | 178.9 in | 188.9 in | 9.9 in |
| Width | 73.9 in | 74.9 in | 1.0 in |
| Height | 50.8 in | 54.8 in | 3.9 in |
| Wheelbase | 96.6 in | 112.5 in | 15.9 in |
| Curb weight | 3,477 lb | 3,973 lb | 496 lb |
Values use trim midpoints when a model year lists a range (e.g. length 177.9 in – 180.0 in).
Compare by year
Overlapping model years with dimension data.
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