BMW M3 vs Cadillac ATS Dimensions & Size Comparison
Comparing 2013 catalog dimensions. BMW M3 · Cadillac ATS
- Length181.8 in
- Height54.8 in – 55.8 in
- Wheelbase108.7 in
- Curb weight3,704 lb – 4,145 lb
- Width71.0 in
- Cadillac ATS width71.1 in
Which is bigger?
- Length: BMW M3 is 1.0 in shorter (181.8 in vs 182.8 in)
- Width: BMW M3 is 0.1 in narrower (71.0 in vs 71.1 in)
- Height: Cadillac ATS is 0.9 in taller (55.3 in vs 56.1 in)
- Wheelbase: Cadillac ATS has a 0.6 in longer wheelbase (108.7 in vs 109.3 in)
- Curb weight: BMW M3 is 477 lb heavier (3,925 lb vs 3,448 lb)
Biggest size differences
- Curb weight: BMW M3 is 477 lb heavier (3,925 lb vs 3,448 lb)
- Height: Cadillac ATS is 0.9 in taller (55.3 in vs 56.1 in)
- Wheelbase: Cadillac ATS has a 0.6 in longer wheelbase (108.7 in vs 109.3 in)
- Length: BMW M3 is 1.0 in shorter (181.8 in vs 182.8 in)
- Width: BMW M3 is 0.1 in narrower (71.0 in vs 71.1 in)
Practical verdicts
- Easier to fit in a short garageBMW M3 — BMW M3 is shorter by 1.0 in Check garage fit for BMW M3 · garage fit for Cadillac ATS
- Narrower for tight parkingBMW M3 — BMW M3 is narrower by 0.1 in
Dimension comparison
| Spec | BMW M3 | Cadillac ATS | Difference |
|---|---|---|---|
| Length | 181.8 in | 182.8 in | 1.0 in |
| Width | 71.0 in | 71.1 in | 0.1 in |
| Height | 55.3 in | 56.1 in | 0.9 in |
| Wheelbase | 108.7 in | 109.3 in | 0.6 in |
| Curb weight | 3,925 lb | 3,448 lb | 477 lb |
Values use trim midpoints when a model year lists a range.
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.