Porsche 911 vs Audi S3 Dimensions & Size Comparison
Comparing 2018 catalog dimensions. Porsche 911 · Audi S3
- Length177.1 in – 179.6 in
- Height50.0 in – 51.0 in
- Wheelbase96.5 in – 96.7 in
- Ground clearance4.0 in
- Curb weight3,153 lb – 3,682 lb
- Width71.2 in – 74.0 in
- Audi S3 width70.7 in
Which is bigger?
- Length: Audi S3 is 2.5 in shorter (178.3 in vs 175.8 in)
- Width: Audi S3 is 1.9 in narrower (72.6 in vs 70.7 in)
- Height: Audi S3 is 4.3 in taller (50.5 in vs 54.8 in)
- Wheelbase: Audi S3 has a 7.0 in longer wheelbase (96.6 in vs 103.6 in)
- Ground clearance: Audi S3 has 0.7 in more ground clearance (4.0 in vs 4.7 in)
- Curb weight: Audi S3 is 45 lb heavier (3,418 lb vs 3,462 lb)
Biggest size differences
- Ground clearance: Audi S3 has 0.7 in more ground clearance (4.0 in vs 4.7 in)
- Height: Audi S3 is 4.3 in taller (50.5 in vs 54.8 in)
- Wheelbase: Audi S3 has a 7.0 in longer wheelbase (96.6 in vs 103.6 in)
- Width: Audi S3 is 1.9 in narrower (72.6 in vs 70.7 in)
- Length: Audi S3 is 2.5 in shorter (178.3 in vs 175.8 in)
Practical verdicts
- Easier to fit in a short garageAudi S3 — Audi S3 is shorter by 2.5 in Check garage fit for Porsche 911 · garage fit for Audi S3
- Narrower for tight parkingAudi S3 — Audi S3 is narrower by 1.9 in
- More ground clearanceAudi S3 — Audi S3 has 0.7 in more clearance
- Smaller exterior footprintAudi S3 — Based on length × width (Audi S3)
Dimension comparison
| Spec | Porsche 911 | Audi S3 | Difference |
|---|---|---|---|
| Length | 178.3 in | 175.8 in | 2.5 in |
| Width | 72.6 in | 70.7 in | 1.9 in |
| Height | 50.5 in | 54.8 in | 4.3 in |
| Wheelbase | 96.6 in | 103.6 in | 7.0 in |
| Ground clearance | 4.0 in | 4.7 in | 0.7 in |
| Curb weight | 3,418 lb | 3,462 lb | 45 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.