Porsche 911 vs Audi A3 Dimensions & Size Comparison
Comparing 2022 vs 2023 catalog dimensions. Porsche 911 · Audi A3
- 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
- Audi A3 width71.5 in
Which is bigger?
- Length: Audi A3 is 2.0 in shorter (178.9 in vs 176.9 in)
- Width: Audi A3 is 2.4 in narrower (73.9 in vs 71.5 in)
- Height: Audi A3 is 5.4 in taller (50.8 in vs 56.2 in)
- Wheelbase: Audi A3 has a 6.9 in longer wheelbase (96.6 in vs 103.5 in)
- Curb weight: Porsche 911 is 66 lb heavier (3,477 lb vs 3,412 lb)
Biggest size differences
- Height: Audi A3 is 5.4 in taller (50.8 in vs 56.2 in)
- Wheelbase: Audi A3 has a 6.9 in longer wheelbase (96.6 in vs 103.5 in)
- Width: Audi A3 is 2.4 in narrower (73.9 in vs 71.5 in)
- Curb weight: Porsche 911 is 66 lb heavier (3,477 lb vs 3,412 lb)
- Length: Audi A3 is 2.0 in shorter (178.9 in vs 176.9 in)
Practical verdicts
- Easier to fit in a short garageAudi A3 — Audi A3 is shorter by 2.0 in Check garage fit for Porsche 911 · garage fit for Audi A3
- Narrower for tight parkingAudi A3 — Audi A3 is narrower by 2.4 in
- Smaller exterior footprintAudi A3 — Based on length × width (Audi A3)
Dimension comparison
| Spec | Porsche 911 | Audi A3 | Difference |
|---|---|---|---|
| Length | 178.9 in | 176.9 in | 2.0 in |
| Width | 73.9 in | 71.5 in | 2.4 in |
| Height | 50.8 in | 56.2 in | 5.4 in |
| Wheelbase | 96.6 in | 103.5 in | 6.9 in |
| Curb weight | 3,477 lb | 3,412 lb | 66 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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