Porsche 911 vs BMW M4 Dimensions & Size Comparison
Comparing 2019 catalog dimensions. Porsche 911 · BMW M4
- 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 M4 width73.6 in – 79.3 in
Which is bigger?
- Length: Porsche 911 is 6.2 in shorter (178.3 in vs 184.6 in)
- Width: Porsche 911 is 3.8 in narrower (72.6 in vs 76.4 in)
- Height: BMW M4 is 4.4 in taller (50.2 in vs 54.6 in)
- Wheelbase: BMW M4 has a 14.1 in longer wheelbase (96.6 in vs 110.7 in)
- Curb weight: BMW M4 is 433 lb heavier (3,412 lb vs 3,845 lb)
Biggest size differences
- Wheelbase: BMW M4 has a 14.1 in longer wheelbase (96.6 in vs 110.7 in)
- Curb weight: BMW M4 is 433 lb heavier (3,412 lb vs 3,845 lb)
- Height: BMW M4 is 4.4 in taller (50.2 in vs 54.6 in)
- Width: Porsche 911 is 3.8 in narrower (72.6 in vs 76.4 in)
- Length: Porsche 911 is 6.2 in shorter (178.3 in vs 184.6 in)
Practical verdicts
- Easier to fit in a short garagePorsche 911 — Porsche 911 is shorter by 6.2 in Check garage fit for Porsche 911 · garage fit for BMW M4
- Narrower for tight parkingPorsche 911 — Porsche 911 is narrower by 3.8 in
- Smaller exterior footprintPorsche 911 — Based on length × width (Porsche 911)
Dimension comparison
| Spec | Porsche 911 | BMW M4 | Difference |
|---|---|---|---|
| Length | 178.3 in | 184.6 in | 6.2 in |
| Width | 72.6 in | 76.4 in | 3.8 in |
| Height | 50.2 in | 54.6 in | 4.4 in |
| Wheelbase | 96.6 in | 110.7 in | 14.1 in |
| Ground clearance | 4.0 in | — | — |
| Curb weight | 3,412 lb | 3,845 lb | 433 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.
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